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- A Black Hole Fired Jets Spanning 140 Milky Ways
- A Blue Exoplanet Where It Rains Molten Glass Sideways
- A day on Venus is longer than its year
- A Kansas farm boy spots Pluto in a blink
- A massive explosion flattened a Siberian forest
- A meteorite crashed through a parked car in Peekskill
- A meteorite struck a woman in Alabama, a rare direct hit
- A rain of stones at L'Aigle proved rocks fall from space
- A shuttle takes flight bolted to a jumbo jet's back
- A solar eclipse halts a battle, the oldest event dated to the day
- A teaspoon of neutron star would outweigh a mountain
- A total solar eclipse crossed Europe and Asia
- A total solar eclipse crosses England, predicted by Edmond Halley
- Alan Shepard becomes the first American in space
- Alan Shepard tees off on the Moon
- Apollo 11 launched on its way to the Moon
- Apollo 11's crew splashed down safely in the Pacific
- Apollo 12 launched and was struck by lightning twice
- Apollo 12 made the second crewed Moon landing
- Apollo 13 launched toward the Moon before its near-fatal accident
- Apollo 13's oxygen tank exploded, prompting 'Houston, we've had a problem'
- Apollo 15 landed the first car on the Moon
- Apollo 17 made the last crewed landing on the Moon
- Apollo 17 splashed down, ending the Apollo Moon program
- Apollo 17's crew shot the Blue Marble, Earth's most famous portrait
- Apollo 7 launched, restoring crewed American spaceflight
- Apollo 8 launched, carrying the first humans to the Moon
- Apollo 8 read from Genesis while orbiting the Moon
- Apollo 9 gave the lunar module its first crewed test
- Astronomer Johannes Kepler was born
- Atlantis Docks With Mir
- Betelgeuse is so big that if it replaced the Sun it would swallow the planets out to Jupiter
- Britain launched its only satellite on a homegrown rocket
- Ceres, the first asteroid, is discovered by Piazzi
- Chaucer Hid a Sky-Date in a Barnyard Fable
- Christiaan Huygens discovered Saturn's moon Titan
- Columbus weaponizes a lunar eclipse in Jamaica
- Comet Hale-Bopp was discovered far beyond Jupiter
- Distant galaxies are receding faster than light — and we can still see them
- Earth Passed Through Halley's Comet's Tail
- Earth passes through the tail of Halley's Comet
- Ed White became the first American to walk in space
- Edwin Hubble Announced Other Galaxies Exist
- Eugene Cernan became the last human to walk on the Moon
- Everything we can see is only about 5% of the universe
- Explorer 1 becomes the first U.S. satellite and discovers the Van Allen belts
- Fizeau and Foucault took the first detailed photograph of the Sun
- Galileo discovers Jupiter's largest moons
- Galileo Galilei is born
- Galileo showed his telescope to Venetian lawmakers
- Gemini 4 began America's first long-duration spaceflight
- Gemini 7 launched on a 14-day endurance flight
- Gemini III carried the first US two-person crew to orbit
- Germany's V-2 rocket reached space on its first successful flight
- Ham the chimpanzee survives a U.S. spaceflight
- Hubble Showed Other Galaxies Exist Beyond the Milky Way
- Hubble stared at an empty speck of sky and found 3,000 galaxies
- Humans have lived in space without a break since November 2000
- In 2015 we caught a ripple in spacetime a fraction of a proton wide
- It rains diamonds inside Neptune and Uranus
- John Glenn orbits the Earth
- Joseph Kittinger leapt from the edge of space
- Jupiter is so massive the Sun doesn't actually orbit its own center
- Jupiter's Great Red Spot is a storm wider than Earth that has raged for centuries
- Kennedy gave his 'We choose to go to the Moon' speech
- Kepler's Supernova blazed into view over Europe
- Laika became the first living creature to orbit Earth
- Lowell Observatory announced the discovery of Pluto
- Luna 2 became the first spacecraft to reach the Moon
- Luna 9 makes the first soft landing on the Moon
- Lunar Orbiter 1 took the first photo of Earth from the Moon
- Mariner 4 launched toward the first close-up photos of Mars
- Mariner 4 returned the first close-up images of Mars
- Mariner 9 became the first spacecraft to orbit another planet
- Mars hosts Olympus Mons, the tallest volcano in the Solar System
- Mercury is slowly shrinking and wrinkling its own crust
- Monkeys Able and Baker become the first to survive a spaceflight and return alive
- Monks may have witnessed a lunar impact
- More than half of all stars come in pairs or groups, not alone like our Sun
- NASA introduced the Mercury Seven, America's first astronauts
- NASA Launched Mars Global Surveyor
- NASA launched the Curiosity rover toward Mars
- NASA launched the final Space Shuttle mission
- NASA launched the Juno probe to Jupiter
- NASA launched the Mars Pathfinder mission
- NASA launched the Viking 1 Mars mission
- NASA launches Skylab, America's first space station
- NASA was created to lead American spaceflight
- NASA's Curiosity rover landed on Mars
- NASA's Spirit rover lands on Mars
- NEAR Shoemaker Lands on Asteroid Eros
- Neil Armstrong took the first human steps on the Moon
- New Horizons made the first flyby of Pluto
- Nixon Approves the Space Shuttle Program
- Nothing can escape a black hole's event horizon, not even light
- Pioneer 10 became the first craft to leave the planets behind
- Pluto slips inside Neptune's orbit
- Pluto was reclassified as a dwarf planet
- Pluto's giant moon Charon was discovered in a photographic smudge
- President Kennedy commits the US to landing a man on the Moon
- Red dwarfs are the most common stars in the Milky Way, about three-quarters of them
- Robert Goddard launched the first liquid-fueled rocket
- Sally Ride became the first American woman in space
- Salyut 1, the world's first space station, is launched
- Saturn is the only planet light enough to float on water
- Saturn's moon Enceladus sprays an ocean into space through icy geysers
- Skylab fell back to Earth, scattering debris over Australia
- Skywatchers logged the supernova that became the Crab Nebula
- Soviet Luna 1 becomes the first spacecraft to reach the Moon's vicinity
- Soviet Soyuz 4 and 5 perform the first crewed spacecraft docking
- Soviet Union launches Mir space station core
- Space Shuttle Columbia disintegrates on reentry
- Space shuttle Endeavour launches on its maiden flight
- SpaceShipOne made the first private crewed spaceflight
- Sputnik 1 launched, opening the Space Age
- Sputnik 2 weighed six times more than the first satellite
- Surveyor 1 made America's first soft Moon landing
- The 1833 Leonid storm rained tens of thousands of meteors an hour and helped found meteor science
- The afterglow of the Big Bang was discovered by accident in 1965
- The Allende meteorite falls over Mexico
- The Apollo 1 fire kills three astronauts
- The Arecibo message beamed humanity's hello to the stars
- The calcium in your bones and iron in your blood were forged inside stars
- The fastest known star spins 716 times every second
- The first known interstellar object, 'Oumuamua, was discovered
- The first Mars rover was the size of a microwave oven
- The first module of the ISS reached orbit
- The First Person to Sleep in Space
- The first Saturn V thundered off the pad on Apollo 4
- The first Space Shuttle, Columbia, launched into orbit
- The first spacewalk was performed
- The foundation stone of the Royal Observatory, Greenwich, was laid
- The Galileo probe arrived at Jupiter
- The Hubble Space Telescope Was Deployed Into Orbit
- The Huygens probe lands on Saturn's moon Titan
- The Magellan Probe Reached Venus
- The man who moved Earth out of the center
- The Milky Way is on course to collide with the Andromeda galaxy in about 4 billion years
- The Moon's hidden face was photographed for the first time
- The observable universe is about 93 billion light-years across
- The Parker Solar Probe is the fastest thing humans have ever built
- The planet Neptune was discovered by mathematics
- The Planet Vulcan That Never Was
- The Soviet Lunokhod 1 became the first rover to drive on another world
- The Soviet Venera 3 became the first probe to reach another planet
- The Space Shuttle Challenger breaks apart after launch
- The Space Shuttle returned to flight after Challenger
- The Sun's core is about 15 million degrees Celsius, hot enough to fuse hydrogen into helium
- The universe has no center and no edge
- The universe is about 13.8 billion years old
- The universe's expansion is speeding up, not slowing down
- The US launched Explorer 4 to study Earth's radiation belts
- The Vanguard 1 satellite was launched
- The Whirlpool Galaxy was discovered
- The world's first communications satellite reached orbit
- There may be more trees on Earth than stars in the Milky Way
- Three Soviet Cosmonauts Died Returning From Space
- Time runs slower near a black hole
- Today's sunshine began its journey tens of thousands of years ago
- Triton, Neptune's largest moon, was found just 17 days after the planet
- Two dogs returned alive from orbit aboard Sputnik 5
- Tycho Brahe spotted a 'new star' that broke the fixed heavens
- Valentina Tereshkova became the first woman in space
- Venera 7 sent the first signal from the surface of another planet
- Venus is hotter than Mercury despite being farther from the Sun
- Venus spins backwards
- Viking 1 made the first successful US landing on Mars
- Viking 2 landed on Mars and sent back images
- Voyager 1 became the first spacecraft to leave the heliosphere
- Voyager 1 launched on its journey to the stars
- Voyager 1 made its closest approach to Saturn
- Voyager 1 takes the 'Pale Blue Dot' photo
- Voyager 2 launched toward the outer planets
- Voyager 2 made its closest approach to Jupiter
- William Herschel discovered Saturn's moon Enceladus
- William Herschel discovered the planet Uranus
- Yuri Gagarin became the first human in space
- A 1919 eclipse photographed starlight bending and made Einstein world-famous
- A freshly shuffled deck of 52 cards is almost certainly an order that has never existed before
- A Glass Drop Shrugs Off a Hammer but Explodes From Its Tail
- A hotel with infinite rooms, all full, can always take more guests
- A math problem so simple a child gets it — and no one can solve it
- A Number Too Big to Write Using the Whole Universe
- A ship's surgeon ran one of history's first controlled trials — on twelve scurvy patients
- Aerogel is almost entirely air, yet it can stop a comet particle
- Albert Einstein died, leaving a transformed view of the universe
- Albert Einstein was born
- Albert Hofmann stumbled onto the effects of LSD
- Alfred Nobel signed the will that created the Nobel Prizes
- Anders Celsius, who gave his name to the temperature scale, was born
- Bakelite: the world's first fully synthetic plastic
- Blaise Pascal, who built an early mechanical calculator, was born
- Britain detonates its first hydrogen bomb in the Pacific
- Britain Tested Its First Atomic Bomb
- Carbon has no melting point at ordinary pressure
- CERN announced the discovery of the Higgs boson
- CERN, the European physics laboratory, was founded
- CERN's Entire Antimatter Haul Would Barely Tap a Phone
- Charles Goodyear patented vulcanized rubber
- Diamonds and pencil lead are made of exactly the same element
- DuPont's lab synthesizes the first sample of nylon
- Einstein presented the final field equations of general relativity
- Einstein signed the letter that warned of an atomic bomb
- Einstein won his Nobel for light, not relativity
- Einstein's relativity paper reached the journal
- Euclid proved the primes never run out — 2,300 years ago
- Feynman imagines the nanoworld
- Fold a piece of paper 42 times and it would reach the Moon
- Galileo arrives in Rome to face the Inquisition
- Galileo Was Forced to Recant His Earth-Moves Theory
- Gallium is a metal that melts in the warmth of your hand
- Giordano Bruno Burned at the Stake
- Glass is a solid — it doesn't slowly flow
- Glass is made by melting sand, and lightning strikes can make it naturally
- Graphene is one atom thick and stronger than steel
- Halley told the Royal Society of Newton's work on orbits
- Heating a magnet past a certain temperature makes it stop being a magnet
- Helium Refuses to Freeze, Even at Absolute Zero
- Helium was found on the Sun before anyone found it on Earth
- Henri Becquerel discovered radioactivity
- India conducts its first nuclear test, code-named 'Smiling Buddha'
- Isaac Newton is born (New Style January 4)
- Isaac Newton was born on Christmas Day
- Isaac Newton was knighted by Queen Anne
- It takes just 23 people for a shared birthday to be likely
- Joseph Priestley isolated oxygen gas
- Leibniz first used the integral sign in calculus
- Liquid Oxygen Is Sky-Blue and Sticks to Magnets
- Marie and Pierre Curie announced the discovery of radium
- Marie Curie, the only person to win Nobels in two sciences, was born
- Math Says You Can Cut One Ball Into Two Identical Balls
- Max Planck presented the quantum theory of radiation
- Mendeleev's periodic table was presented to the world
- Mercury is the only metal that stays liquid at room temperature
- Michael Faraday discovered electromagnetic induction
- Michael Faraday, pioneer of electromagnetism, was born
- Modern medicine's gold-standard trial was born from sealed envelopes and random numbers
- Modern science demands that a real theory be able to be proven wrong
- Most of the Universe's Water Is a Glass, Not Ice
- Newton's Principia appeared, setting the foundation of modern physics
- Nylon, the first true synthetic fiber, is patented
- On the hardness scale, the jump to diamond is enormous
- Particles can pass through walls they shouldn't
- Philosopher Rene Descartes was born
- Physicist Isaac Newton died
- Roman concrete heals its own cracks
- Sandpaper was patented in the United States
- Scientists redid 100 psychology studies — and most didn't hold up
- Some metals conduct electricity with zero resistance
- Spider silk is stronger than steel of the same weight
- Temperatures Below Absolute Zero Are Hotter Than Infinity
- Tennessee's anti-evolution Butler Act was signed into law
- The Best Atomic Clock Won't Lose a Second in 30 Billion Years
- The coldest stuff in the universe was made on Earth
- The Curies Announced the Discovery of Radium
- The equals sign was born from a writer's impatience
- The first Nobel Prizes were awarded
- The first nuclear weapon was detonated in the Trinity test
- The Gregorian calendar began, skipping ten days
- The Gregorian calendar took effect
- The Inquisition condemned Galileo for backing Copernicus
- The Large Hadron Collider circulated its first beam
- The most famous failed experiment in physics found exactly nothing
- The Night Britain Skipped Eleven Days
- The pitch-drop experiment has been running since 1927
- The pope reforms the calendar
- The Royal Society published the first scientific journal
- The Smithsonian Institution was established
- The Soviet Union tested the largest bomb ever built
- The total energy of the universe may add up to exactly zero
- Theodore Maiman demonstrates the first working laser
- There are more possible games of chess than atoms in the observable universe
- There are only about 25 grams of francium in Earth's entire crust
- There's a material so black it absorbs nearly all the light that hits it
- Twelve men met in London and founded the Royal Society
- Water can boil and freeze at the same time
- Water is at its heaviest at 4°C — which is why ice floats
- Wilhelm Röntgen discovered X-rays by accident
- Wilhelm Röntgen, who saw through the body, was born
- A 10-kilometre asteroid ended the age of dinosaurs
- A Dutch cloth merchant was the first to see microbes — through homemade lenses
- A Fungus Turns Ants Into Zombies and Aims for Noon
- A honeybee's waggle dance is a map drawn in the dark
- A hummingbird's heart can beat 1,200 times a minute
- A Microbe Hangs From Cave Ceilings as Living Battery Acid
- A sperm whale's hunting dive can plunge two kilometers into the dark
- A teaspoon of healthy soil holds more microbes than there are people on Earth
- A Yellowstone hot-spring microbe made modern DNA testing possible
- A young godwit flew 13,560 km without a single stop
- An octopus tastes with its arms — and partly thinks with them too
- Argentinosaurus may be the heaviest land animal ever to walk the Earth
- Bats are the only mammals that truly fly
- Birds are living dinosaurs
- Bowhead whales may live more than 200 years
- Bristlecone pines are the oldest non-clonal living trees
- Carl Linnaeus, father of modern taxonomy, is born
- Charles Darwin is born in Shrewsbury
- Charles Darwin set sail aboard HMS Beagle
- Cicadas that count to 13 and 17 — both prime numbers
- Darwin and Wallace's theory of evolution was first read aloud
- Darwin's Beagle reached the Galapagos Islands
- Darwin's On the Origin of Species went on sale
- Dinosaurs ruled the Earth for over 150 million years
- Dogs Were the First Animal Humans Ever Domesticated
- Dragonflies catch up to 95% of the prey they chase
- Hatchling Turtles Survive Winter by Refusing to Freeze
- Hyperion, the tallest living tree, is a coast redwood
- Many famous dinosaurs were covered in feathers
- More time separates us from T. rex than separated T. rex from Stegosaurus
- Most land plants are wired into a fungal "wood wide web"
- Nearly all life shares the same genetic code
- No single monarch butterfly completes the migration
- Octopuses have three hearts
- One bacterium survives radiation that would kill a human thousands of times over
- One in every four animal species is a beetle
- Oregon's highway crew tried to blow up a whale with half a ton of dynamite
- Scientists unveil Dolly, the cloned sheep
- Sharks are older than trees, dinosaurs, and Saturn's rings
- Tardigrades can survive the open vacuum of outer space
- The "immortal jellyfish" can rewind its own life cycle
- The Arctic tern migrates farther than any other animal
- The axolotl regrows limbs, heart, and even brain
- The Beetle That Fires Boiling Chemical Spray
- The blue whale is the largest animal that has ever lived
- The box jellyfish is the most venomous animal in the sea
- The Brainless Cell That Solves Mazes
- The coelacanth, a fish thought extinct for 66 million years, turns up alive
- The colossal squid has the largest eye of any animal
- The first cultured pearl was harvested off Japan
- The first elephant arrived in the United States
- The Great Dying killed nine in ten species
- The Greenland shark may be the oldest living vertebrate
- The Komodo dragon kills with venom, not just bacteria
- The largest organism on Earth is a honey fungus in Oregon
- The last known thylacine died in a Tasmanian zoo
- The mantis shrimp's punch is so fast it boils the water around it
- The mimic octopus impersonates other sea creatures on demand
- The naked mole-rat barely ages, resists cancer, and runs cold
- The Oldest Air-Breathing Land Animal Was a Millipede
- The Oldest Known Predator on Earth
- The ostrich is the largest bird, lays the largest egg, and outruns a racehorse
- The peregrine falcon is the fastest animal on Earth
- The platypus is a venomous, egg-laying mammal that hunts by electricity
- The saltwater crocodile has the strongest bite ever measured
- The swallows return to San Juan Capistrano
- The titan arum is a giant flower that smells of rotting flesh
- The tuatara is a living fossil with a third eye
- There may be a depth limit where no fish can live
- This Bug Is the Only Animal With Real Gears
- This Tiny Animal Stole Genes From Bacteria and Plants
- Tiktaalik: the "fishapod" caught mid-step onto land
- Utah's Pando: One Tree With 40,000 Trunks
- Viruses are the most abundant biological entities on Earth
- We date dinosaur fossils using radioactive clocks in the rock
- Wood frogs freeze solid all winter, then thaw back to life
- You carry roughly as many bacterial cells as human cells
- A Baby's Cells Live in the Mother for Decades
- A fever is your brain turning up the thermostat
- A Single Gene Decides If Broccoli Tastes Bitter
- A single word in a question can rewrite a witness's memory
- A WHO commission certified smallpox eradicated
- About 8% of your DNA comes from ancient viruses
- An iron rod through Phineas Gage's skull reshaped neuroscience
- Antibiotics drive the evolution of resistance
- Any two people share 99.9% of their DNA
- Barney Clark received the first permanent artificial heart
- Color vision rides on about 6 million cones — night vision on 120 million rods
- CRISPR gene editing was borrowed from bacteria
- DNA's double helix was revealed in 1953
- Dolly the sheep, the first mammal cloned from an adult cell, was born
- Dunbar's number: can we really only juggle about 150 relationships?
- Elizabeth Blackwell becomes the first U.S. woman to earn a medical degree
- Ether was first used as a surgical anesthetic
- Everyone alive today shares one female ancestor from Africa
- Fleming discovered penicillin in a moldy dish
- Florence Nightingale, founder of modern nursing, is born
- Half of People Miss a Gorilla in Plain Sight
- Human hearing spans 20 Hz to 20,000 Hz — sorted by a snail-shaped organ
- Identical twins don't have identical fingerprints
- Insulin is first used to treat a diabetic patient
- Jonas Salk announced a successful polio vaccine
- Learning London physically grew cabbies' brains
- Lost inner-ear hair cells never grow back
- Louis Pasteur first used his rabies vaccine on a human
- Nerve signals race through you at highway speeds
- Penicillin, the first antibiotic, was discovered by accident
- Phantom limbs: amputees still feel limbs that are gone
- Robert Koch named the germ behind tuberculosis
- Scientists unveiled the first working draft of the human genome
- Smallpox is the only human disease ever eradicated
- Surgeons painlessly operated under ether for the first time in public
- Surgeons performed the world's first human heart transplant
- The brain is 2% of your weight but burns 20% of your energy
- The Brain Itself Cannot Feel Pain
- The CDC reported the first cases of what became AIDS
- The FDA approves the first oral contraceptive pill
- The first documented human blood transfusion was performed
- The first mass polio shots are given
- The first vaccine used cowpox to beat smallpox
- The fossil 'Lucy' was unearthed in Ethiopia
- The human nose may distinguish more than a trillion smells
- The liver can rebuild itself after losing most of its mass
- The more people who witness an emergency, the less likely any one helps
- The placebo effect is real brain chemistry, not just imagination
- The Salk polio vaccine was declared safe and effective
- The smallest bone in your body sits inside your ear
- The Stroop effect: why your brain can't help reading
- The tongue "taste map" is a myth — every region tastes everything
- The World Health Organization was established
- The world's first 'test-tube baby' was born
- U.S. Surgeon General links smoking to cancer
- Watson and Crick crack the DNA double helix
- Wilhelm Rontgen published his discovery of X-rays
- You can't tickle yourself
- You have a blind spot in each eye — your brain hides it
- You Have Far More Than Five Senses
- You inherit your mitochondrial DNA only from your mother
- You were born with more bones than you have now
- You're roughly half microbe by cell count
- Your body makes about 2 million new red blood cells every second
- Your brain files memories while you sleep
- Your brain runs on 86 billion neurons
- Your eyes can be tricked into 'seeing' motion that isn't there
- Your genome is 3 billion letters but only ~20,000 genes
- Your Heart Has Its Own Little Brain
- Your largest organ is the one you can see
- Your small intestine is folded to the size of a room
- Your stomach lining replaces itself every few days
- 'Bloody Sunday' marchers were beaten in Selma
- "Don't Give Up the Ship": A Dying Captain's Final Order
- A 3,000-Year-Old Egyptian Prosthetic Toe Was Custom-Fitted
- A Bomb Plot Against Hitler Failed
- A border ambush opened the Mexican-American War
- A German U-boat sinks the liner Lusitania off Ireland
- A night on a cold platform changed Gandhi forever
- A prince by a creek ended three centuries of colonial rule
- A submarine sinks a warship for the first time
- A Weather Rocket Nearly Started a Nuclear War
- Abolitionist John Brown Was Executed
- Abraham Lincoln was elected president, hastening the Civil War
- Adolf Hitler is appointed Chancellor of Germany
- Alexander Selkirk rescued after years marooned
- Algeria Gained Independence From France
- Allied Nations Celebrate V-E Day
- Amelia Earhart vanished over the Pacific Ocean
- America's Oldest City Is as Old as the Egyptian Pyramids
- An anarchist's three shots ended King Umberto I
- An assassination in Sarajevo triggered World War I
- An explosion wrecked the Parthenon during a siege
- Andrew Jackson wins the Battle of New Orleans
- Anne Boleyn is executed at the Tower of London
- Anne Frank and her family were arrested in Amsterdam
- Annie Edson Taylor Was the First Person to Survive Going Over Niagara Falls in a Barrel
- Argentina invaded the Falkland Islands, starting the Falklands War
- Austria-Hungary declared war on Serbia, lighting the fuse of World War I
- Babylonian astronomers used proto-calculus to track Jupiter
- Battle of Iwo Jima begins
- Blackbeard the Pirate Was Killed in Battle
- Breaking the Enigma code may have shortened WWII by years
- Britain abolished its slave trade in 1807 — but not slavery itself
- Britain and France Declared War on Germany
- Britain and France declared war on Russia
- Britain declared war on Germany, entering World War I
- Britain gave royal assent to the Stamp Act on the colonies
- Britain takes control of Hong Kong island
- British Forces Burned Washington, D.C.
- British forces surrendered at Yorktown
- Bronze Age Western Mummies Were Genetically Local Loners
- Bush and Gorbachev signed a deal to slash chemical weapons
- Canada Became a Self-Governing Dominion
- Captain Cook becomes the first European to reach Hawaii
- Captain Cook's ship first crosses the Antarctic Circle
- Çatalhöyük: a 9,000-year-old town with no streets
- Charlemagne was crowned Emperor of the Romans
- Che Guevara was captured in the Bolivian highlands
- Che Guevara was executed in a Bolivian schoolhouse
- Chemical weapons saw their first large-scale use at the Second Battle of Ypres
- Chicago's Haymarket affair turned deadly
- Chicago's Haymarket affair turns deadly
- China's Xinhai Revolution began with the Wuchang Uprising
- Churchill gave his "Iron Curtain" speech
- Claudette Colvin Refused to Give Up Her Bus Seat
- Cleopatra lived closer in time to the Moon landing than to the building of the Great Pyramid
- Cologne Cathedral took 632 years to build — across dozens of generations
- Colonists dumped 342 chests of tea into Boston Harbor
- Columbus made landfall in the Bahamas
- Columbus Reached the South American Mainland
- Columbus returned to Spain from his first voyage
- Columbus set sail on his first voyage
- Congress fixed the US flag at 13 stripes and a star for every state
- Constantine the Great is born at Naissus
- Constantinople falls to the Ottoman Turks, ending the Byzantine Empire
- Construction of the Berlin Wall began
- Coordinated attacks struck the U.S. on September 11
- Cortés and Moctezuma met on a causeway into Tenochtitlan
- Crusaders massacred the town of Béziers — "kill them all"
- Cuban revolutionaries triumph as Batista flees Havana
- Custer's command was wiped out at the Little Bighorn
- Cyprus wins independence from Britain
- D-Day was the largest seaborne invasion in history
- Darwin's 'Origin of Species' appeared in a print run of 1,250 copies
- Delegates Began Signing the Declaration of Independence
- Edward IV Was Proclaimed King of England
- Egyptians Invented the World's First Synthetic Color
- Elizabeth I Became Queen of England
- Elizabeth I died, and two crowns drew closer
- Elizabeth I Is Crowned Queen of England
- Enemy soldiers stopped fighting to share Christmas in 1914
- English settlers establish Jamestown, Virginia
- Eratosthenes measured the Earth with a stick and a shadow
- Fall of Singapore
- Fidel Castro becomes prime minister of Cuba
- France abolished its monarchy
- Francis Drake set out to circumnavigate the globe
- Gandhi began the Salt March
- Genghis Khan may be the direct male-line ancestor of about 1 in 200 men alive today
- George Mallory and Andrew Irvine vanish near the summit of Everest
- George VI Is Crowned King of the United Kingdom
- George Washington born in Virginia
- George Washington Created the Purple Heart
- George Washington was sworn in as the first US President
- Germany launched its massive invasion of the Soviet Union
- Germany reunified after the Cold War
- Germany signs its unconditional surrender, ending WWII in Europe
- Germany's V-1 flying bombs first struck London
- Gobekli Tepe's stone temples predate Stonehenge, farming and pottery
- Gold is discovered at Sutter's Mill, sparking the Gold Rush
- Granada falls, ending Muslim rule in Iberia
- Greece's Junta Devoured Its Own Leader
- Greensboro sit-ins begin
- Gutenberg's Bible launched mass printing in Europe
- Henry V died, leaving an infant heir
- Henry V Was Crowned King of England
- Hikers stumbled on a 5,000-year-old murder victim
- Hiram Bingham reached Machu Picchu and brought it to world attention
- Hitler's Beer Hall Putsch collapsed in a Munich beer hall
- Howard Carter opens Tutankhamun's burial chamber
- Howard Carter peered into Tutankhamun's tomb and saw "wonderful things"
- In 1983, one Soviet officer's hunch may have stopped a nuclear war
- India awoke to independence at the stroke of midnight
- Iraq invaded Kuwait
- Israel Declares Independence
- Israeli agents capture Nazi fugitive Adolf Eichmann in Argentina
- James Cook came ashore at Botany Bay on Australia's east coast
- Jamestown colonists go ashore and begin building in Virginia
- Japan attacked Pearl Harbor, pulling the U.S. into World War II
- Japan's surrender was announced, ending World War II
- Joan of Arc is burned at the stake in Rouen
- Joan of Arc Is Captured at Compiègne
- Joan of Arc led the relief of the besieged city of Orleans
- Juan Ponce de Leon sighted Florida and named it for Spain
- Julius Caesar was assassinated on the Ides of March
- Juneteenth marked the end of slavery in Texas
- Kennedy revealed the Cuban Missile Crisis to the world
- Khomeini Returns to Iran
- Khrushchev denounces Stalin in the 'Secret Speech'
- King Edward VIII Abdicated the British Throne
- King Henry VI dies in the Tower of London
- King John sealed Magna Carta at Runnymede
- Korea printed a book with movable metal type 78 years before Gutenberg
- Kristallnacht pogroms swept Nazi Germany
- Lady Jane Grey, the Nine Days' Queen, is beheaded
- Lee surrendered to Grant at Appomattox, ending the war in Virginia
- Legend dates William Tell's apple shot to this day
- Lincoln dedicated a battlefield in about two minutes
- Lincoln issued the preliminary Emancipation Proclamation
- Lincoln set the national Thanksgiving holiday
- MacArthur kept his promise and returned to Leyte
- Madrid's rebels are executed by Napoleon's troops, immortalized by Goya
- Magellan died in the Philippines, never finishing his voyage
- Magellan's expedition reached the Philippines
- Mahatma Gandhi is assassinated
- Mahatma Gandhi was born
- Malcolm X assassinated in Harlem
- Mali's Mansa Musa gave away so much gold he wrecked Cairo's economy
- Mao Proclaimed the People's Republic of China
- Marie Antoinette was guillotined during the French Revolution
- Marines raise the flag on Iwo Jima
- Martin Luther King Jr. Was Assassinated
- Martin Luther King Jr. Won the Nobel Peace Prize
- Mary, Queen of Scots is beheaded
- Mary, Queen of Scots Is Defeated at the Battle of Langside
- Mary, Queen of Scots Was Forced to Abdicate
- Mexican forces defeat the French at the Battle of Puebla
- Mexico's war of independence began with the Grito de Dolores
- Mikhail Gorbachev became Soviet leader
- Mikhail Gorbachev resigned as the Soviet Union dissolved
- Mother Teresa Arrives in Calcutta
- Mountbatten named last Viceroy of India
- Mussolini Executed by Italian Partisans
- Mussolini's March on Rome handed fascism a country
- Napoleon abdicated unconditionally and was exiled to Elba
- Napoleon Arrived in Exile on Saint Helena
- Napoleon Bonaparte dies in exile on Saint Helena
- Napoleon crowned himself Emperor of the French
- Napoleon Escapes from Elba
- Napoleon met his final defeat at Waterloo
- Napoleon's army entered a burning Moscow
- Napoleon's Grande Armee crossed the Niemen into Russia
- Nat Turner's Rebellion Began in Virginia
- Nelson Mandela walks free after 27 years
- Nelson won Trafalgar and lost his life in the same afternoon
- New Zealand was the first country to give women the vote, in 1893
- Octavian won the Battle of Actium and ended the Roman Republic
- One Baghdad scholar gave us both 'algebra' and 'algorithm'
- Otzi the Iceman is a 5,300-year-old murder victim preserved in glacier ice
- Oxford University is older than the Aztec Empire
- Pakistan was born in the Partition of British India
- Pan Am Flight 103 was bombed over Lockerbie
- Panama declared independence, clearing the way for the canal
- Paris Was Liberated From German Occupation
- Parisians stormed the Bastille, igniting the French Revolution
- Patrick Henry demanded liberty, or death
- Paul Revere made his midnight ride to warn of British troops
- Pedro Alvares Cabral led the first documented European landfall in Brazil
- Pedro Alvares Cabral set sail toward an accidental Brazil
- People Power Revolution ousts Marcos
- Persia's Royal Road carried a message 1,500 miles in nine days
- Peter Fechter Was Shot at the Berlin Wall
- Peter Stuyvesant Arrives to Lead New Amsterdam
- Philip IV had the Knights Templar arrested across France
- Pizarro ambushed the Inca emperor Atahualpa at Cajamarca
- Pocahontas married John Rolfe and bought Virginia a fragile peace
- Pompeii's famous body casts are plaster poured into human-shaped holes
- Pompeii's Walls Preserved 11,000 Pieces of Graffiti
- Pope John Paul II is shot in St. Peter's Square
- Portugal Broke Free of Spain in a Single Morning
- President Abraham Lincoln was shot at Ford's Theatre
- Queen Elizabeth II was crowned in the first televised coronation
- Queen Victoria began her record-setting reign
- Radiocarbon dating reads a built-in clock that starts ticking at death
- Reagan and Gorbachev Met Face to Face in Geneva
- Reagan dared Gorbachev to 'tear down this wall'
- Robert F. Kennedy was shot in Los Angeles
- Roger Williams arrives in America
- Roman Emperor Caracalla Was Assassinated
- Romania's dictator Ceausescu fled Bucharest by helicopter
- Romans heated their homes and baths with underfloor central heating
- Rome's legendary founding is traditionally dated to this day
- Ruth Carol Taylor becomes the first Black flight attendant
- Saddam Hussein was captured in Iraq
- Saddam Hussein was executed
- Saladin captured Jerusalem from the Crusaders
- Serum run to Nome reaches Alaska
- Singapore Became a British Crown Colony
- Soldiers discovered the Rosetta Stone in Egypt
- Solomon Northup walks free after twelve stolen years
- South Carolina seceded from the Union
- Soviet Forces Complete the Capture of Berlin
- Soviet troops liberate the Auschwitz concentration camp
- Spain and Portugal split the unexplored world along a line
- Spain recognizes Portuguese independence
- Stalin Expelled Trotsky From the Communist Party
- Stanislav Petrov chose not to start a nuclear war
- Swedish PM Olof Palme is shot dead in Stockholm
- Tajikistan declared independence from the Soviet Union
- Tank Man stood before a column of tanks in Beijing
- Tanks crush the Prague Spring
- Tanks were used in battle for the first time
- Teenagers discovered the Lascaux cave paintings
- Texas Won Independence at the Battle of San Jacinto
- The 1861 telegraph linked America coast to coast — and killed the Pony Express
- The 1918 flu killed more people than the First World War
- The Acts of Union create the Kingdom of Great Britain
- The American Civil War Began at Fort Sumter
- The American Revolutionary War began at Lexington and Concord
- The Antikythera Mechanism: a 2,000-year-old analog computer
- The atomic bomb was dropped on Hiroshima
- The atomic bomb was dropped on Nagasaki
- The Battle of Agincourt stunned France
- The Battle of Antietam became the bloodiest day in U.S. history
- The Battle of Bosworth ended the Wars of the Roses
- The Battle of Hastings reshaped England
- The Battle of Jutland: WWI's Largest Naval Clash Begins
- The Battle of Lepanto broke the myth of Ottoman invincibility
- The Battle of Midway turned the tide in the Pacific
- The Battle of Naseby Broke the King's Army
- The Battle of Rorke's Drift
- The Battle of the Alamo fell after a 13-day siege
- The Battle of the Bulge began in the Ardennes
- The Battle on the Marchfeld Shaped Central Europe
- The Bay of Pigs invasion of Cuba began
- The Berlin Airlift Began Supplying a Blockaded City
- The Berlin Wall fell after a garbled press conference in 1989
- The Black Death killed up to half of Europe
- The Bolsheviks seized power in the October Revolution
- The bombardment that inspired the U.S. anthem began
- The Bonfire of the Vanities
- The Boston Massacre inflamed colonial anger
- The Bridge of Spies Swap That Freed Gary Powers
- The British Empire was the largest in history
- The Castle Bravo hydrogen bomb test went badly wrong
- The Christmas Truce Spread Across the Western Front
- The Church Banned the Crossbow as Too Deadly
- The Continental Congress adopted the Declaration of Independence
- The Cuban Missile Crisis Formally Ended
- The day Octavian became Augustus and Rome got an emperor
- The Day Rome Killed Its Own Emperor
- The Day Tenochtitlan Fell
- The Day the Victorian Era Ended
- The Decembrist Revolt Erupted in Russia
- The Dunkirk evacuation begins, a flotilla rescues a trapped army
- The Dutch East India Company Was Founded
- The Easter Rising Began in Dublin
- The Fall of Saigon Ended the Vietnam War
- The firebombing of Dresden begins
- The first 1,000-bomber air raid strikes Cologne
- The first battle between ironclad warships was fought
- The first crewed Moon landing happened on July 20, 1969
- The First Dog in Space Did Not Survive the Mission
- The First Fleet arrives, founding the colony of Australia
- The First German Immigrants Arrived in America
- The first hydrogen bomb test erased a Pacific island
- The first writing was invented to keep accounts
- The Flagstaff War began in New Zealand
- The German battleship Bismarck is sunk in the North Atlantic
- The German Democratic Republic (East Germany) was founded
- The German invasion of Poland began World War II
- The German Sixth Army Surrenders at Stalingrad
- The Great Exhibition opens at London's Crystal Palace
- The Great Fire of London began in a bakery
- The Great Fire of Rome broke out
- The Great Migration of 1843 Opens the Oregon Trail to Families
- The Gulf War ground war ends in 100 hours
- The Gunpowder Plot to blow up Parliament was foiled
- The Haitian Revolution began
- The Hundred Years' War actually lasted 116 years
- The Hundred Years' War Effectively Ended
- The Inca ran a 24,000-mile road empire without writing or the wheel
- The Iran-Iraq War began
- The Jallianwala Bagh Massacre
- The Jamestown Massacre took place
- The King Who Lost His Head
- The Knights Templar gain papal recognition
- The Korean War armistice silenced the guns
- The Korean War began with an invasion from the north
- The last US combat troops left Vietnam
- The last Western Roman emperor was deposed
- The Library of Alexandria didn't die in a single dramatic fire
- The Louisiana Purchase transferred to the United States
- The Massacre at Béziers Opened the Albigensian Crusade
- The Mayflower departed Plymouth for America
- The Mayflower finally left England — on its third attempt
- The Mayflower reached the New World
- The Mongol Empire was the largest contiguous land empire ever
- The mutiny on HMS Bounty broke out in the Pacific
- The My Lai massacre occurred in Vietnam
- The Mysterious Kaspar Hauser Appears in Nuremberg
- The NAACP is founded on Lincoln's centennial
- The Nanjing Massacre began
- The National University of San Marcos is founded in Lima, Peru
- The Nazi massacre at Oradour-sur-Glane
- The Oldest Peace Treaty Hangs on a Wall at the UN
- The Paris Peace Conference Opens After WWI
- The Reichstag burns, and German democracy with it
- The Roman emperor Nero died, ending a dynasty
- The Rosetta Stone unlocked Egyptian hieroglyphs by repeating one decree in three scripts
- The Scots won the Battle of Stirling Bridge
- The Selma to Montgomery march set off under federal protection
- The Senate proclaims Napoleon Bonaparte Emperor of the French
- The Seneca Falls Convention launched the women's rights movement
- The shortest war in history lasted under 40 minutes
- The siege of Sarajevo began, the longest of any capital in modern war
- The Siege of the Alamo Begins
- The Soviet Union invaded Finland, starting the Winter War
- The Soviet Union lifts the Berlin Blockade
- The Soviet Union Tested Its First Atomic Bomb
- The Soviet Union was officially established
- The Soweto Uprising Erupted in South Africa
- The Stars and Stripes became the U.S. flag
- The Strasbourg Massacre of 1349
- The Temple of Artemis, an ancient wonder, was destroyed by arson
- The Tennis Court Oath launched the French Revolution
- The Terracotta Army was discovered in China
- The Treaty of Paris ends the Seven Years' War
- The Treaty of Paris recognized American independence
- The Treaty of Versailles formally ended World War I
- The Treaty of Waitangi Founds a Nation
- The U.S. Air Force broke free of the Army
- The U.S. and USSR signed the INF nuclear arms treaty
- The U.S. embassy in Tehran was seized, starting a 444-day hostage crisis
- The U.S. Invaded Panama to Remove Manuel Noriega
- The U.S. loses a hydrogen bomb off Tybee Island
- The U.S. Naval Academy opened at Annapolis
- The U.S. won the Battle of Lake Erie
- The UN General Assembly creates UNICEF
- The United States Declared War on Britain
- The United States Entered World War I
- The US re-established its Navy with six frigates
- The Visigoths Sacked Rome
- The Wars of the Roses begin at the First Battle of St Albans
- The Warsaw Ghetto Uprising began against Nazi occupation
- The Warsaw Uprising began
- The World's Oldest Customer Complaint Is About Bad Copper
- The Wounded Knee Massacre took place
- The Yalta Conference Begins
- The Yom Kippur War caught Israel off guard
- The Yugoslav wars began with fighting in Slovenia
- Thomas Becket was murdered in Canterbury Cathedral
- Thomas Blood attempts to steal the Crown Jewels from the Tower of London
- Thomas More was executed in England
- Thor Heyerdahl set sail on the Kon-Tiki raft across the Pacific
- Three Ships Set Sail to Found Jamestown
- Tiananmen Square crackdown began in Beijing
- Tutankhamun's tomb was found nearly intact in 1922 — with about 5,000 objects
- Two Italian cities fought a deadly medieval war — and the winners carried off a wooden bucket they still display
- Two million people formed the Baltic Way human chain
- Uganda gains independence from Britain
- USS Maine explodes in Havana Harbor
- Vasco da Gama set sail to find a sea route to India
- Venezuela Was the First Spanish Colony in the Americas to Declare Absolute Independence
- Vicente Pinzón becomes the first European to reach Brazil
- Vikings reached America 500 years before Columbus
- Virginia Dare was born in the Roanoke Colony
- Wallis Simpson's divorce cleared the path to the abdication crisis
- Wiley Post became the first person to fly solo around the world
- William Penn was granted the charter for Pennsylvania
- William the Conqueror landed in England
- William Wallace was executed in London
- World War I ended at the eleventh hour of the eleventh day
- World War II formally ended aboard the USS Missouri
- World War II is the deadliest conflict in human history
- Abel Tasman became the first European to sight New Zealand
- About 85% of Australians live within 50 km of the coast
- Africa is larger than the US, China, India, and most of Europe combined
- Alabama Became the 22nd U.S. State
- Alaska becomes the 49th U.S. state
- Amerigo Vespucci was born
- Angkor Wat is the largest religious monument on Earth
- Arkansas Became the 25th U.S. State
- Azerbaijan declared the restoration of its independence
- Big Ben's Great Bell Rang for the First Time
- Bir Tawil is a patch of land no country wants
- Britain leased Hong Kong's New Territories for 99 years
- Burma Chose Its Own Path Out of Empire
- Byrd Claims the First Flight Over the North Pole
- California became the 31st U.S. state
- Canada raises the maple leaf flag
- Canada's coastline is the longest in the world
- Cape Cod is sighted and named by Bartholomew Gosnold
- Chimborazo, not Everest, is the point farthest from Earth's center
- Cologne Cathedral Was Completed After Six Centuries
- Columbus reached Puerto Rico on his second voyage
- Constantinople was officially renamed Istanbul
- Construction Began on the Leaning Tower of Pisa
- Damascus may be the oldest continuously inhabited city
- Florida Became the 27th US State
- Franklin's Doomed Expedition Departs to Find the Northwest Passage
- Global life expectancy has more than doubled in a century
- Greenland looks as big as Africa, but it's 14x smaller
- Greenwich was voted the world's prime meridian
- Hawaii became the 50th US state
- Henry Hudson entered Hudson Bay
- Henry Hudson Reached Delaware Bay
- Humanity passed 8 billion people in 2022
- Iceland declared full independence from Denmark
- Illinois Joins the Union as the 21st State
- India Won Its Freedom at the Stroke of Midnight
- Indiana became the 19th U.S. state
- Istanbul straddles two continents
- Jacob Roggeveen sighted Easter Island on Easter Sunday
- Kiribati Gained Independence
- Kuwait Gained Independence From Britain
- La Paz is the world's highest capital city
- London's Big Ben bell was cast at the Whitechapel Bell Foundry
- Magellan sailed off to circle the Earth
- Magellan's fleet emerged from its strait into the Pacific Ocean
- Magellan's Fleet Set Off to Circumnavigate the Globe
- Maine Became the 23rd US State
- Mississippi became the 20th U.S. state
- Monaco is the most densely populated country on Earth
- Mont Blanc Was First Summited
- More than half of humanity now lives in cities
- Mount Rushmore was declared complete
- New Amsterdam Becomes a City
- One battered ship closed the first lap around the world
- One town is split into dozens of national fragments
- Only two countries are landlocked inside landlocked countries
- Over half of humanity lives inside one circle in Asia
- Point Nemo: the spot in the ocean so remote the nearest humans are usually astronauts
- Reno, Nevada sits farther west than Los Angeles
- Reporter Nellie Bly set off to beat Around the World in 80 Days
- Richard Byrd's team made the first flight over the South Pole
- Rio de Janeiro Was Founded
- Roald Amundsen's team became the first to reach the South Pole
- Robert Peary's expedition claimed to reach the North Pole
- Russia and the United States are less than 4 km apart
- Russia is so wide it spans eleven time zones
- Several countries have no permanent rivers at all
- Singapore became an independent nation
- St. Augustine, the oldest US city, was founded
- Tennessee became the 16th U.S. state
- Texas became the 28th U.S. state
- The Burj Khalifa, the world's tallest building, opens in Dubai
- The Day a Line of Latitude Became the US-Canada Border
- The Eiffel Tower grows up to 15 cm taller in summer
- The Eiffel Tower opens to the public at the Paris World's Fair
- The Eiffel Tower was completed
- The First Person to Sail Alone Around the World
- The Gateway Arch Was Completed in St. Louis
- The Great Pyramid stood as the tallest structure on Earth for nearly 4,000 years
- The International Date Line zigzags to keep countries whole
- The Irish Free State Came Into Existence
- The Kon-Tiki Raft Crossed the Pacific on Balsa Logs
- The Lateran Treaty creates Vatican City
- The Lincoln Memorial is dedicated in Washington, D.C.
- The Louisiana Purchase nearly doubled the size of the United States
- The National Geographic Society is founded
- The Pacific Ocean is bigger than all of Earth's land combined
- The Seattle World's Fair opened, debuting the Space Needle
- The Statue of Liberty arrived in New York Harbor
- The Statue of Liberty was dedicated
- The Sydney Opera House officially opened
- The U.S. formally took possession of Alaska
- The U.S. handed control of the Panama Canal to Panama
- The U.S. signed the Gadsden Purchase treaty with Mexico
- The United Arab Emirates was formed
- The US agreed to buy Alaska from Russia
- The USA–Canada border is the longest in the world
- The Washington Monument Opened to the Public
- The whole world's longitude is measured from one line in London
- The world has roughly half as many babies per woman as in 1950
- The world's smallest country fits inside a single city
- There's one spot where you can stand in four US states at once
- Tokyo is the world's largest urban agglomeration
- Tsar Peter the Great founds the city of St. Petersburg
- Twelve nations signed the Antarctic Treaty
- Two countries tie for the most neighbours: fourteen each
- Vasco da Gama reaches India by sea around Africa
- Vasco da Gama rounded the Cape of Good Hope toward India
- Vatican City Became an Independent State
- Venice stands on millions of wooden piles
- Victoria Falls is the largest single sheet of falling water on Earth
- Western Samoa: the first Pacific island nation to break free
- World Population Reached Seven Billion
- World Population Reached Six Billion
- Yellowstone became the world's first national park
- You cannot see the Great Wall of China from space with the naked eye
- A blackout plunged New York City into darkness
- A car broke the sound barrier on land for the first time
- A cascading failure left 30 million people in the dark
- A computer beats the world chess champion
- A Gutenberg Bible was first dated complete
- A human first rose into the sky in a hot-air balloon
- A jet engine works by squeezing air, setting it on fire, and shoving it backward
- A Kilowatt-Hour Is the Unit on Your Electricity Bill
- A massive blackout hit the northeastern US and Canada
- A reactor in the Idaho desert lit four light bulbs with atomic power
- A single Google search runs across thousands of servers in a fraction of a second
- A steel box cut shipping costs more than thirtyfold
- About 99% of international internet traffic travels through cables on the seafloor
- Ada Lovelace wrote the first computer program — for a machine that was never built
- Alan Turing, who imagined the modern computer, was born
- Alexander Graham Bell patented the telephone
- Amelia Earhart becomes the first woman to fly the Atlantic solo
- America's first roller coaster opened at Coney Island
- America's first vacuum cleaner needed a hand crank
- Apple Computer was founded by Steve Jobs and Steve Wozniak
- Apple introduced the iPod
- Apple's first iPhone went on sale
- Apple's Lisa pioneers the mouse-driven personal computer
- Atari released Pong, helping launch the video game industry
- Bell files his telephone patent
- Brunel's SS Great Britain, the first great iron screw steamer, was launched
- CERN gave the World Wide Web away to everyone, for free
- Charles Babbage unveiled the Difference Engine
- Charles Babbage, father of the computer, was born
- Charles Lindbergh lands in Paris, conquering the Atlantic alone
- Charles Lindbergh takes off on the first solo nonstop transatlantic flight
- Chuck Yeager first broke the sound barrier
- Concorde began scheduled supersonic service between London and New York
- Concorde crossed the Atlantic in under three hours
- Concorde made its first test flight
- Construction of the Golden Gate Bridge begins
- Construction of the Suez Canal officially began
- Daimler Patents the World's First Motorcycle
- Data Centers Use as Much Electricity as a Mid-Sized Country
- Earhart Solos the Pacific, Hawaii to California
- Eastman's 1885 Film Helped Movies Move
- Edison gave the first public demonstration of his light bulb
- Edison Patents the Light Bulb
- Edison Patents the Phonograph
- Edison switched on the first commercial power station
- Edison's Phonograph Captures the First Recorded Voice
- Edwin Land demonstrates the instant camera
- Einstein Patented a Refrigerator With No Moving Parts
- Eli Whitney patented the cotton gin
- Elias Howe patented the lockstitch sewing machine
- Emma Nutt, the first female telephone operator
- Facebook launches
- First aircraft landing on a ship
- First flight across the English Channel by balloon
- First manned balloon flight in the Americas
- First U.S. 911 Emergency Call
- Ford unveiled the Mustang, launching the 'pony car' era
- Ford's Model T went on sale
- France Bolted On the World's First Car Number Plates
- Fulton's Steamboat Conquers the Hudson
- George Washington signed America's first patent
- George Westinghouse patented the air brake
- Georges Claude patents the neon discharge tube for lighting
- Gideon Sundback patents the modern zipper
- Google launched Gmail with a then-staggering 1 GB of storage
- Gordon Moore published the observation that became Moore's Law
- GPS Would Fail Without Einstein's Relativity
- Hedy Lamarr Patented the Idea Behind Wireless
- Henri Giffard flew the first powered airship
- Henry Ford patents a plastic car body
- Herman Hollerith patents the punched-card tabulating machine
- HMS Dreadnought makes every battleship obsolete
- Howard Hughes flew the giant Spruce Goose on its one and only flight
- Humans first flew free in a Montgolfier balloon over Paris
- IBM launched its first personal computer
- IBM's Deep Blue defeats world chess champion Garry Kasparov
- Intel's 4004 Put a Whole Computer Brain on One Chip
- Inventor Nikola Tesla was born
- Isaac Singer Patented the Sewing Machine That Reached Every Home
- James Puckle patents the Puckle gun, an early machine gun
- Johannes Gutenberg dies
- John Logie Baird, television pioneer, was born
- John Walker sold the first friction matches he invented
- Karl Benz patents the first practical automobile
- Karl Benz publicly drove the first practical automobile
- László Bíró patents the modern ballpoint pen
- LEDs Turn Almost All Their Energy Into Light, Not Heat
- Leonardo's flying machines never left the page
- Louis Bleriot made the first airplane flight across the English Channel
- Marconi Filed the First Wireless Telegraphy Patent
- Microsoft Announced Windows
- Microsoft Released Windows XP
- Microsoft shipped the first version of Windows
- Moore's Law: a 1965 magazine prediction that ran the digital age
- Nintendo released the Game Boy handheld console in Japan
- One Dish in Australia Is Earth's Only Link to Voyager 2
- One lightning bolt carries enough energy to power a house for over a week
- Pac-Man makes its debut in a Tokyo arcade
- Pan Am Launched the First Transatlantic Jet Service
- Post-it Notes came from a glue that was too weak to work
- Pumped Hydro Is the World's Largest Battery
- Queen Victoria sent the first transatlantic telegraph message
- Radar gets its first proof in a field near Daventry
- Railroads gave America "the Day of Two Noons"
- RFC 1 launched the internet's collaborative rulebook
- Roman concrete heals its own cracks — and we only just learned how
- Samuel Morse demonstrates the telegraph
- Samuel Morse patented the electric telegraph
- Scott Fahlman proposes the first emoticon :-) on a Carnegie Mellon bulletin board
- Shanghai's maglev floated commuters along at 431 km/h
- Solar Power Is the Cheapest Electricity in History
- Sony launched the Walkman and made music portable
- Steve Jobs unveils the first iPhone
- Super Mario Bros. was released in Japan
- Sweden switched to driving on the right overnight
- Tandy Released the TRS-80 Home Computer
- Telstar Beams Live TV Across the Atlantic
- Tetris was created by a Soviet computer scientist
- The @ symbol was a near-forgotten character rescued by the first email
- The airship Hindenburg bursts into flames at Lakehurst, New Jersey
- The barcode was first sketched as lines in Florida beach sand
- The BBC broadcasts the Greenwich "pips" for the first time
- The Boeing 747 makes its maiden flight
- The Boeing Company Was Founded
- The Brooklyn Bridge opens in New York City
- The Burj Khalifa Is Shaped to Confuse the Wind
- The Channel Tunnel Has the World's Longest Undersea Stretch
- The Channel Tunnel linking Britain and France opens
- The chip-maker Intel was founded
- The daguerreotype was given freely to the world
- The daguerreotype: photography's public debut
- The day a doll's head became television
- The Day the Internet Switched On
- The dishwasher was patented
- The earliest known recording of the human voice was captured
- The Empire State Building opens in New York City
- The Falkirk Wheel Lifts Boats Using No Net Weight
- The first .com domain name was registered
- The first airplane passenger fatality occurred
- The first Apple Macintosh goes on sale
- The First Bitcoin Block Is Mined
- The first car was given a number plate
- The first commercial adding machine was patented
- The First Commercial Electric Telegraph Was Demonstrated
- The first commercial oil well struck oil in Pennsylvania
- The first computer "bug" was a real moth
- The first computer mouse was a wooden box with two metal wheels
- The first crewed transatlantic balloon flight succeeded
- The first electrically lit Christmas tree glowed in New York
- The first flight around the world landed back in Seattle
- The first handheld mobile phone call was made on a Motorola prototype
- The first intelligible telephone call summoned an assistant
- The first licensed female pilot earned her wings
- The First Moving Assembly Line Began Producing Ford Cars
- The first nonstop flight around the world was completed
- The First Nuclear Chain Reaction Happened Under a Football Stadium
- The first nuclear-powered submarine, USS Nautilus, is launched
- The first nylon-bristle toothbrush goes on sale
- The First Orient Express Departed Paris
- The first Otis passenger elevator was installed
- The first permanent ARPANET link, the internet's ancestor, went live
- The first photocopy was made
- The first powered flight lasted just 12 seconds
- The first public steam railway opened in England
- The First Railway Journey Hauled Iron, Not Passengers
- The first recorded parachute jump took place
- The first steamship crossed the Atlantic
- The first stored-program computer ran its first software
- The First Transatlantic Phone Call
- The First Transatlantic Telegraph Cable
- The first U.S. patent for a gasoline-driven automobile was granted
- The first U.S. patent for an electric motor
- The first video was uploaded to YouTube
- The First VR Headset Hung From the Ceiling
- The Golden Gate Bridge opens, the world's longest suspension span
- The Gossamer Albatross Pedaled Across the English Channel
- The Gutenberg Bible is finished
- The Hawker Hurricane took to the air for the first time
- The implantable pacemaker was born when an engineer grabbed the wrong resistor
- The Internet and the Web are not the same thing
- The internet's first message was meant to be "login" — but it crashed at "lo"
- The Largest Machine Ever Built Is Colder Than Space
- The London Underground opens, the world's first subway
- The microwave oven was invented after a candy bar melted in an engineer's pocket
- The Miracle on the Hudson river landing
- The Montgolfier brothers flew the first public hot-air balloon
- The Morris Worm became one of the first internet worms
- The Mother of All Demos unveiled the computer mouse
- The New York City subway opened
- The Panama Canal lifts ships 26 meters uphill to cross a continent
- The Panama Canal opened to traffic
- The Patent That Riveted the World Into Blue Jeans
- The pencil with an attached eraser was patented
- The RMS Titanic is launched in Belfast
- The RMS Titanic set sail from Southampton on its only voyage
- The Spindletop gusher launches the Texas oil boom
- The SR-71's speed record has stood since 1976
- The Suez Canal opened, linking the Mediterranean and Red Seas
- The supersonic Concorde enters commercial service
- The Tacoma Narrows Bridge twisted apart in the wind
- The Tay Bridge collapsed during a storm
- The Three Mile Island nuclear accident began
- The transcontinental railroad is completed at Promontory, Utah
- The transistor — the device that built the modern world — debuted in 1947
- The transistor was first demonstrated at Bell Labs
- The Turing test asks not whether machines think, but whether they can fool us
- The two ends of the Channel Tunnel were connected beneath the sea
- The typewriter that gave us QWERTY was patented
- The U.S. Interstate Highway System was born
- The US Navy Bought Its First Submarine, USS Holland
- The World Wide Web was invented at a physics lab to help scientists share documents
- The world's first cash machine opened for business in London
- The world's first commercial nuclear power station opened
- The World's First Hybrid Car Ran in 1900
- The world's first hydroelectric central station switched on
- The world's first webcam was invented to watch a coffee pot
- The Wright brothers patent the secret of controlled flight
- Thomas Edison is born in Milan, Ohio
- Tim Berners-Lee formalized his proposal for the World Wide Web
- Tim Berners-Lee opened the World Wide Web to the public
- Titan I takes its first flight
- USS Enterprise, the first nuclear-powered aircraft carrier, was launched
- USS Nautilus crossed the North Pole beneath the ice
- Velcro was invented by copying the burrs that stuck to a dog's fur
- Voyager flew nonstop around the world without refueling
- VW Beetle overtakes the Ford Model T
- Wi-Fi was born from a failed search for exploding black holes
- Wikipedia goes online
- William Burt patented the typographer, an early forerunner of the typewriter
- Willis Carrier invented modern air conditioning
- Without Cooling Pipes, Hoover Dam Would Still Be Curing
- Your phone dwarfs the computer that landed Apollo 11
- "Huh?" may be the closest thing to a universal word
- "Nice" once meant ignorant and foolish
- "OK" started as a deliberately misspelled joke in 1839
- "Quarantine" literally means "forty days"
- "Robot" was coined for a 1920 play and means "forced labor"
- "Salary" comes from the Latin word for salt — but Roman soldiers weren't paid in it
- A Language That Gets By on Just Twelve Letters
- Across languages, basic color words appear in a near-universal order — and red comes first after black and white
- America's first multi-page newspaper lasted one issue
- An Illiterate Man Invented an Entire Writing System
- Australia's Secret Initiation Language Had Clicks
- Aymara Speakers Put the Future Behind Them
- Basque is a language with no living relatives on Earth
- Boustrophedon: ancient Greeks wrote alternating lines in opposite directions
- Braille fits an entire alphabet under one fingertip
- Champollion announced he had decoded hieroglyphs
- Chinese has ~40,000 characters; you need a tenth to read
- CNN launched the era of 24-hour cable news
- Easter Island May Have Invented Writing From Scratch
- English has the most speakers, but Chinese has the most native speakers
- Esperanto was invented by one eye doctor to be a neutral world language
- First part of the Oxford English Dictionary published
- Korea's alphabet was invented on purpose, by a king
- Meet the Press, the Longest-Running TV Show, Debuted
- Most Western alphabets descend from 22 Phoenician letters
- Noah Webster published his American Dictionary of the English Language
- Not all scripts are alphabets — there are four basic kinds
- On average, a language dies about every two weeks
- On one Canary island, a whole language is whistled
- Orson Welles aired War of the Worlds as fake news bulletins
- Papua New Guinea speaks more languages than any country on Earth
- Pirahã, an Amazonian language, appears to have no exact numbers
- Samuel Johnson published his Dictionary of the English Language
- Sign languages aren't English on the hands — they have their own grammar
- Some languages use clicks as everyday consonants
- Strong Sunlight May Erase the Word Blue
- Telstar, the first communications satellite, launched
- The 'Great Moon Hoax' began in a New York newspaper
- The "mare" in nightmare is a demon, not a horse
- The @ symbol has wildly different names — many of them animals
- The abbreviation 'OK' first appeared in print
- The BBC began its first daily radio broadcasts
- The BBC First Broadcast the Chimes of Big Ben
- The BBC launched the world's first regular high-definition TV service
- The BBC was founded
- The first issue of Life magazine appeared
- The first radio signal across the Atlantic was a single letter S
- The first telegraph message asked: What hath God wrought?
- The first televised White House address aired
- The first text message ever sent read: Merry Christmas
- The first transcontinental phone call is made in the U.S.
- The liner Slavonia sent one of the first SOS calls
- The McGurk effect: what you see can change what you hear
- The Moscow-Washington hotline went into operation
- The New York Times published its first edition
- The Observer, the world's oldest Sunday newspaper, was founded
- The oldest surviving photograph took hours of sunlight to make
- The QWERTY keyboard was designed for a machine that no longer exists
- The window to learn a language's grammar stays open until about 17
- The word "avocado" comes from a Nahuatl word that also meant "testicle"
- The word "goodbye" is a contraction of "God be with you"
- There is a language with no words for left and right — only north and south
- Two deaf communities spontaneously invented brand-new sign languages from scratch
- When Western Union Wired the Coasts Together
- Why Babies Worldwide Say Mama and Papa
- 'The Day the Music Died' plane crash
- "A Visit from St. Nicholas" First Appeared in a Small-Town Newspaper
- "Mary Had a Little Lamb" Goes to Print
- "Tragedy" literally means "goat song"
- A cable channel bet that fans wanted sports around the clock
- A Charlie Brown Christmas first aired on television
- A Christmas Carol went on sale just before Christmas
- A galloping horse settled a question in 1878 — and helped invent the movies
- A John Cage piece is being played so slowly it will take 639 years
- A Simple Tennis Game Launched the Arcade Era
- Agatha Christie is the best-selling novelist of all time
- Agatha Christie, the best-selling novelist, leaves a record legacy
- Agatha Christie's "The Mousetrap" is the longest-running play ever
- American Bandstand goes national on ABC
- Andy Warhol exhibited his Campbell's Soup Cans
- Anne Frank got the diary that would move the world
- Anne Frank's diary was first published
- Antonio Stradivari, master violin maker, died
- Apple's '1984' Super Bowl ad debuts the Macintosh
- Ballet speaks French because a king codified it
- Beethoven Premiered His Fifth and Sixth Symphonies in One Marathon Night
- Beethoven was profoundly deaf when he composed the Ninth Symphony
- Beethoven's Ninth Symphony premieres in Vienna
- Billboard published its first Hot 100 chart
- Bizet's Carmen flopped at its Paris premiere
- Buckingham Palace Announces the Charles-Diana Engagement
- Bugs Bunny Made His Debut
- Carnegie Hall opens in New York City
- Charles and Diana married at St Paul's Cathedral
- Cinema was born in a Paris basement on 28 December 1895
- Composer Frédéric Chopin Was Born
- Composer Johann Sebastian Bach was born in Eisenach
- Disney's Fantasia premiered with pioneering stereo sound
- Disneyland opened its gates in California
- Doc Brown dreamed up the flux capacitor (in fiction)
- Doctor Who began its record-breaking run on the BBC
- Donald Duck made his screen debut
- Early movie film could catch fire — and burn underwater
- Elvis Presley Died at Graceland
- Elvis Presley Was Inducted Into the US Army
- Elvis Presley's Aloha from Hawaii reaches a global audience
- Epidaurus' ancient seats are a built-in acoustic filter
- For decades, American readers got A Clockwork Orange without its redemptive final chapter
- Frank Lloyd Wright's spiral museum opened months after his death
- Frank Sinatra was born in Hoboken
- Frankenstein Was Published Anonymously
- George Orwell's Nineteen Eighty-Four was published on 8 June 1949
- Gone with the Wind premiered in a segregated Atlanta
- Grace Kelly married Prince Rainier of Monaco
- Handel completed his oratorio Messiah
- Handel's Messiah premiered in Dublin
- Hattie McDaniel becomes the first Black Oscar winner
- Herman Melville's Moby-Dick was first published
- Huckleberry Finn reaches American readers — and gets banned
- Jane Austen's Pride and Prejudice is published
- Johann Christoph Denner Invented the Clarinet Around 1700
- John Lennon and Paul McCartney met for the first time
- John Lennon was shot dead outside his New York home
- John Wayne, the face of the Hollywood Western, died at 72
- Johnny Carson Took Over The Tonight Show
- King Kong premiered in New York
- Leave It to Beaver premiered on American TV
- Leonardo da Vinci dies at Amboise in France
- Leonardo da Vinci was born near Vinci, Italy
- Live Aid linked two stadiums for famine relief
- Lolita Published in America
- Ludwig van Beethoven was most likely born
- Magician Harry Houdini died on Halloween
- Marilyn Monroe Marries Joe DiMaggio
- Marilyn Monroe sings 'Happy Birthday' to President Kennedy
- Marilyn Monroe was found dead at 36
- Mary Shelley dreamed up Frankenstein at 18, trapped indoors by a volcanic summer
- Mary Shelley, Author of Frankenstein, Is Born
- Metropolitan Museum of Art opens
- Michelangelo dies in Rome at 88
- Michelangelo signed only one sculpture in his life — the Pietà
- Michelangelo unveiled the Sistine Chapel ceiling on All Saints' Day
- Michelangelo Was Born
- Michelangelo's David was unveiled in Florence
- Mickey Mouse whistled his way onstage in Steamboat Willie
- Milton Sold Paradise Lost for Five Pounds
- Moby-Dick Reached America in 1851
- Modern tuning splits the octave into 12 equal steps — using the 12th root of 2
- Monty Python's Flying Circus First Aired
- Mozart conducted the premiere of The Magic Flute in Vienna
- Mozart wrote his first symphony at age eight
- Mozart's The Marriage of Figaro Premieres in Vienna
- MTV Launched and Rewired How Pop Music Was Sold
- New York's Met is the largest opera house in the world
- Pablo Picasso was born
- Paul McCartney announced the breakup of the Beatles
- Philippe Petit walked a wire between the Twin Towers
- Picasso and Braque made Cubist works so alike that experts still can't always tell them apart
- Poe's "The Raven" Takes Flight
- Popeye the Sailor First Appears in a Comic Strip
- Radio City Music Hall Opened in New York
- Saturday Night Live premiered on NBC
- Sesame Street premiered and rewrote children's television
- Shakespeare died in Stratford in 1616
- Shakespeare gave us the first record of 1,700-plus words
- Shakespeare's baptism, written in a borrowed Latin line
- Shakespeare's Globe Theatre burned to the ground
- Shakespeare's Marriage Bond
- Shakespeare's Othello Was First Performed
- Snow White, the first full-length animated feature, opens widely
- Snow White, the first full-length animated feature, premiered
- Star Trek beamed onto American television
- Stravinsky's Rite of Spring sparks a riot at its Paris premiere
- Tchaikovsky's '1812 Overture' Premiered in Moscow
- The Beatles give their final public performance on a London rooftop
- The Beatles land in America
- The Beatles meet America on Ed Sullivan
- The Beatles released Abbey Road
- The Beatles released their first single, "Love Me Do"
- The carol Silent Night was performed for the first time
- The first Academy Awards ceremony is held in Hollywood
- The First Actress Appeared on the English Stage
- The first author in history signed her own name
- The first commercial Christmas card
- The First Commercial Kinetoscope Parlor Opened
- The first drive-in movie theater opened in New Jersey
- The first feature-length "talkie" had barely two minutes of talking
- The first Guinness Book of Records was published
- The first James Bond film, Dr. No, premiered
- The first New Year's Eve ball drop was held in Times Square
- The First Permanent Movie Theater in the US Opened in Los Angeles
- The Flintstones premieres as the first primetime animated TV series
- The Frisbee Toy Is First Sold
- The Ghent Altarpiece is the most-stolen artwork in history
- The highest-grossing film ever isn't Avatar — it's from 1939
- The Hitchhiker's Guide to the Galaxy was published
- The Hobbit was first published
- The Last Original Peanuts Strip
- The Lego Brick Is Patented in Its Modern Form
- The Library of Congress was established
- The Lumiere brothers held the first projected film screening
- The Mikado premiered in London
- The Mona Lisa became the world's most famous painting after it was stolen in 1911
- The Mona Lisa Crosses the Atlantic for Its American Debut
- The most expensive painting ever sold went for $450 million
- The Nutcracker Premiered in St. Petersburg
- The oldest complete song we can still play is carved on a Greek tombstone
- The oldest great story we still read is 4,000 years old
- The oldest known figurative artwork is a 45,500-year-old pig painted in an Indonesian cave
- The oldest known musical instrument is a 40,000-year-old bird-bone flute
- The original Star Wars film premieres in theaters
- The Peanuts comic strip first appeared
- The Pied Piper legend traces to a real lost-children event in Hamelin
- The rainbow Pride flag was first flown
- The Rolling Stones played their first concert
- The same recorded scream has been hidden in hundreds of movies as a sound-designer in-joke
- The Simpsons premiered as a half-hour series
- The Venus de Milo was unearthed on the Greek island of Milos
- The Woodstock festival opened
- The world's first novel was written by a woman around 1010
- Thomas Edison was granted a patent for the Kinetographic Camera
- Thomas Paine Publishes Common Sense
- Ultramarine blue once cost more than gold, so painters saved it for the Virgin Mary
- Uncle Tom's Cabin sold out its first run in a single week
- Van Gogh sold only one painting during his lifetime
- Vincent van Gogh cut off part of his own ear
- Walt Disney World opened in Florida
- Why an octave sounds 'the same' note: it's a perfect 2:1 frequency ratio
- A great-flood story appears in cultures around the world
- A kosher Torah scroll is handwritten by a scribe - all 304,805 letters
- Anansi, the West African spider, is one of myth's great tricksters
- Ancient Egyptians weighed the heart against a feather to judge the dead
- Archbishop Ussher dated the creation of the world
- Baptism reenacts a symbolic death and rebirth in water
- Buddhism began in India yet has its fewest followers there today
- China's oldest writing was carved to ask the dead and the gods questions
- Christianity and Islam together claim more than half of humanity
- Constantine Made Sunday a Roman Day of Rest
- Devout Jain monks sweep the ground and veil their mouths to spare tiny life
- Dia de Muertos welcomes the dead home each November
- Diwali, the festival of lights, is celebrated by over a billion people
- Egyptian mummification preserved the body as a home for the soul
- Four English weekday names come from Norse gods
- Islam was the fastest-growing major religion of the 2010s
- Luther Stands Before the Diet of Worms
- Martin Luther married a former nun
- Martin Luther's 95 Theses sparked the Reformation
- Mithraism was a secret Roman cult that worshipped in cave-like temples
- Mormon founder Joseph Smith was killed by a mob in Illinois
- Muslims pause five times a day to pray toward a single building
- Norse myth has its own apocalypse, and the gods themselves die in it
- Over 1.6 million pilgrims perform the Hajj each year
- Pope John Paul II's Pilgrimage to Poland
- Pope John XXIII opened the Second Vatican Council
- Pope Pius IX defined the Immaculate Conception as dogma
- Saint Patrick, patron of Ireland, is traditionally said to have died
- Shinto's 'eight million gods' is a number that really means 'countless'
- Sikhism is widely ranked the world's fifth-largest organized religion
- The Baha'i faith's holiest place is where its founder was a prisoner
- The Bible is the most translated and most printed book in history
- The Book of Mormon was published
- The Dalai Lama fled Tibet into exile
- The Dead Sea Scrolls are about a thousand years older than the next-oldest Hebrew Bibles
- The Greek underworld river Lethe made the dead forget their whole lives
- The Hebrew Bible was copied so carefully that scribes counted every letter
- The Islamic calendar drifts 11 days earlier every year
- The Islamic Calendar's Year One Began on July 16, 622
- The King James Bible Is First Published
- The Kumbh Mela is the largest peaceful gathering on Earth
- The Maya Long Count calendar's start date
- The Millerites awaited the Great Disappointment
- The Nazca Lines may have been giant pathways walked in ritual
- The Oldest Beer Recipe Is a Hymn to a Goddess
- The planets are named after Roman gods
- The Prophet Muhammad Died in Medina
- The Quran was first compiled from memory and scattered scraps
- The Quran's 114 chapters are arranged by length, not by date
- The religiously unaffiliated are the world's third-largest group
- The world's oldest dated printed book is a Buddhist scroll from 868 CE
- Westminster Abbey Was Consecrated
- Yggdrasil is the great ash tree at the centre of the Norse cosmos
- Zoroastrianism is among the world's oldest enduring monotheistic faiths
- A pilot's 'flying saucers' sparked the modern UFO era
- A small sea snail's shell was money across three continents
- A van bomb tears a crater under the World Trade Center
- Alcoholics Anonymous Was Founded in Ohio
- America's First Federal Department Was Born on July 27
- American Express began life hauling freight, not charge cards
- American women won the constitutional right to vote
- Barack Obama was elected the first Black U.S. president
- Black Monday triggered a global stock market crash
- Black Thursday began the Wall Street Crash
- Black Tuesday crashed Wall Street into the Great Depression
- Bonnie and Clyde are killed in a Louisiana ambush
- Boston Latin School, the oldest US public school, was founded
- Brazil abolishes slavery with the Golden Law
- Britain Abolished the Death Penalty for Murder
- Britain issues the Penny Black, the world's first adhesive postage stamp
- Charles Ponzi promised to double your money in 90 days
- China's first treaty-port concession was carved out of Shanghai in 1845
- Churchill Steps Down at Number 10
- Clara Barton founds the American Red Cross
- Coca-Cola launched 'New Coke', a famous marketing misstep
- Comparative advantage: even a worse producer profits from trade
- Compound interest turned Franklin's tiny bequest into millions over 200 years
- Congress passed the women's suffrage amendment
- Congress sent twelve amendments to the states
- Coordinated bombings struck London's transit system
- D.B. Cooper Parachuted Away and Vanished
- Delaware became the first state to ratify the U.S. Constitution
- Egypt and Israel signed a peace treaty
- Egypt Nationalized the Suez Canal
- England's First Elected Parliament Meets
- FDR signs Japanese American internment order
- FDR was inaugurated amid the Great Depression
- Fingerprints solved their first murder in 1892
- Firestone founds the tire company that helped put America on wheels
- Ford Motor Company sold its first car
- Ford Motor Company was incorporated
- France adopted the Declaration of the Rights of Man
- GDP measures output, not how well people are doing
- George Washington is unanimously elected first U.S. president
- Georgia ratifies the U.S. Constitution as the fourth state
- Gerald Ford Was Sworn In as US President
- Golda Meir became Israel's first female prime minister
- Government under the U.S. Constitution began
- Gresham's Law: bad money drives out good
- Habeas corpus: the writ that forces the state to justify a detention
- Half a million people marched against the Vietnam War in Washington
- Hitler Became Führer of Germany via Plebiscite
- How a Civil War prayer put "In God We Trust" on American coins
- Iceland's Althing began in 930 - but Tynwald is the oldest still running without a break
- In 1971, the US dollar stopped being convertible to gold
- International Women's Day Was First Observed
- Interpol has 196 members - but makes no arrests
- Jack the Ripper's first canonical victim was murdered
- James Earl Ray Pleaded Guilty to Killing Martin Luther King Jr.
- John Scopes is indicted in Tennessee for teaching evolution
- John Wilkes is expelled from Parliament over press freedom
- Lech Walesa won Poland's first direct presidential election
- Lincoln Signs the Thirteenth Amendment
- London transit bombings killed dozens
- London's Big Bang rewired global finance in one day
- London's new Metropolitan Police walked their first beat
- Manhattan was bought for trade goods worth about 60 guilders
- Margaret Thatcher becomes Britain's first female prime minister
- Martin Luther King Jr. gave his "I Have a Dream" speech
- Marx and Engels publish The Communist Manifesto
- Massachusetts ratifies the U.S. Constitution
- Microsoft went public
- Mohamed Bouazizi's self-immolation sparked the Arab Spring
- Native Americans were granted U.S. citizenship
- Nellie Tayloe Ross becomes the first woman U.S. governor
- Nelson Mandela is inaugurated as South Africa's first Black president
- Nevada legalized wide-open gambling in the depths of the Depression
- New Hampshire's vote put the U.S. Constitution into effect
- Nintendo was founded as a playing-card company
- Nixon insisted to editors: "I am not a crook"
- Oliver Cromwell Dissolved England's Rump Parliament
- One 1918 law gave America its time zones and daylight saving
- OPEC Turned Oil Into a Weapon
- Oscar Wilde Is Convicted of Gross Indecency in London
- Outlaw Jesse James Was Killed in Missouri
- Pennsylvania ratified the U.S. Constitution
- Pirate Captain Kidd is hanged in London
- Poland adopts Europe's first modern written national constitution
- President Bill Clinton was impeached by the House
- President John F. Kennedy was assassinated in Dallas
- President Polk confirmed the California gold strike to Congress
- President Reagan Was Shot and Survived
- President Truman signed the Marshall Plan to rebuild postwar Europe
- Princess Diana died in a Paris car crash
- Prohibition ended in the United States
- Richard Nixon Announced His Resignation
- Rome's Twelve Tables were the first written Roman law
- Rosa Parks refused to give up her bus seat in Montgomery
- Russia's October Manifesto Promised Civil Liberties
- San Marino's constitution dates from 1600 - the oldest still in force
- Scotland voted to establish its own parliament
- Slavery abolished across the British Empire
- South Africa held its first fully democratic, multiracial election
- Spices were once so precious they launched the Age of Exploration
- Susan B. Anthony voted illegally and was arrested
- The 13th Amendment abolished slavery in the United States
- The 13th Amendment was officially proclaimed in effect
- The 1963 Great Train Robbery stole millions in untraceable banknotes
- The 19th Amendment Was Certified Into Law
- The 2008 U.S. election drew the highest turnout in decades
- The 33 Trapped Chilean Miners Were Rescued
- The accounting system behind modern business was first printed in 1494
- The Barbie doll made its debut
- The Boy Scouts of America is incorporated
- The Brink's-Mat gold robbery stunned Britain
- The British North America Act created Canada
- The Buttonwood Agreement plants the seed of the New York Stock Exchange
- The Code of Hammurabi set out 282 laws carved in stone
- The Day Harvard Got Its Name
- The day the West unveiled NATO's founding treaty
- The Dow Jones Industrial Average is first published
- The Dreyfus Affair conviction shook France
- The Dutch East India Company may be the most valuable company in history
- The empty frames of the world's biggest art heist
- The Erie Canal opened, transforming American trade
- The euro launched as an electronic currency for 11 nations
- The first coins were minted in Lydia around 600 BCE
- The first Geneva Convention was adopted
- The first impeachment of a U.S. president
- The first Labor Day parade was held in New York City
- The first modern stock exchange opened in Amsterdam in 1602
- The first murder solved by DNA cleared an innocent man first
- The first national Thanksgiving under the Constitution was held
- The First Parliament of Great Britain Met
- The First Recorded Labor Strike Was in Ancient Egypt
- The First Salem Witch Trial Arrest Warrants
- The First U.S. Execution by Gas Chamber
- The first U.S. federal Martin Luther King Jr. Day is observed
- The first UN General Assembly convenes in London
- The first Walmart store opened in Arkansas
- The first woman ran for president before women could vote
- The First Woolworth Five-and-Dime Opens
- The Ford Edsel's $250 Million Flop
- The Great Train Robbery struck in England
- The Gunfight at the O.K. Corral took place
- The Hanseatic League was a medieval trade network of nearly 200 towns
- The House finally picks a president on the 36th ballot
- The House Picks a President
- The Hudson's Bay Company is chartered in London
- The impeachment trial of President Andrew Johnson ends in acquittal
- The Jonestown Mass Deaths Shocked the World
- The Judiciary Act of 1789 built the federal court system
- The Los Angeles riots erupted after the Rodney King verdict
- The Maastricht Treaty creates the EU
- The Marshall Plan Was Proposed at Harvard
- The Mayflower Compact set up self-government for the Pilgrims
- The Miranda warning was born from a Supreme Court ruling
- The New York Stock Exchange was formally organized
- The Nuremberg trials of Nazi leaders began
- The Pony Express began carrying mail across the American West
- The Rome Statute Created the World's First Permanent War-Crimes Court
- The Rule of 72 tells you when your money doubles
- The Scopes 'Monkey Trial' verdict was reached
- The Silk Road was a web of routes, and silk was only part of it
- The South Sea Bubble ruined fortunes — including Isaac Newton's
- The St. Valentine's Day Massacre
- The Standard Oil monopoly was broken into 34 companies in 1911
- The Star-Spangled Banner became the US national anthem
- The Stonewall uprising sparked the gay rights movement
- The Stono Rebellion ignites colonial Carolina
- The Supreme Court found a right to privacy in birth control
- The Supreme Court struck down bans on interracial marriage
- The Tokyo subway sarin attack struck the morning rush hour
- The Treaty of Rome created the European Economic Community
- The trial of Adolf Eichmann opened in Jerusalem
- The trial of Warren Hastings ran seven years - one of history's longest political trials
- The Triangle factory fire killed 146 workers
- The Truman Doctrine Was Announced
- The U.S. Bill of Rights came into force
- The U.S. Congress passes the 13th Amendment abolishing slavery
- The U.S. Constitution was signed in Philadelphia
- The UN adopted the Universal Declaration of Human Rights
- The UN voted to partition Palestine into Arab and Jewish states
- The UN was founded in 1945 by 51 nations - and now has 193 members
- The United Nations Charter Was Signed
- The US adopted the gold standard
- The US and USSR signed the START nuclear arms treaty
- The US Civil Rights Act Was Signed Into Law
- The US dollar is on one side of nearly 9 in 10 currency trades
- The US issued its first national paper money
- The US Postal Service introduced ZIP codes
- The US postal system was established with Franklin as first Postmaster
- The US Supreme Court rules school segregation unconstitutional in Brown v. Board
- The Victoria Cross, Britain's highest military honor, is established
- The Wall Street Journal published its first issue
- The Walt Disney Company was founded with a four-page contract
- The Watergate break-in set a presidency unraveling
- The Watts riots erupted in Los Angeles
- The World Bank and IMF came into existence
- The World's First Paper Money Came From Medieval China
- The world's oldest company built Buddhist temples for over 1,400 years
- The YMCA was founded in London
- Three men escaped Alcatraz with dummy heads - and vanished
- Tulip mania was history's first recorded speculative bubble
- Twelve nations signed the treaty creating NATO
- UNESCO Was Founded to Build Peace Through Education and Culture
- Volkswagen Is Founded in Germany
- West Point: America's First Military Academy
- Zimbabwe once printed a 100-trillion-dollar banknote
- A royal wedding sparked the first Oktoberfest
- A single mutation made almonds safe to eat
- Adding iodine to salt may be the cheapest brain-saving measure in history
- After water, tea is the most consumed drink on Earth
- All Arabica Coffee Descends From One Plant
- Almonds need a near-nationwide migration of bees
- Almonds, peaches and apricots are close cousins - and some kernels carry cyanide
- Almost every banana you eat is a clone of the same plant
- Apples don't grow true from seed — every variety is a graft of one original tree
- Before refrigeration, an ice trade shipped frozen lakes around the world
- Canning was invented to feed Napoleon's armies
- Carbonated water was invented while trying to copy natural mineral springs
- Carrots were purple, yellow and white long before they were orange
- Cashews Are Kin to Poison Ivy and Must Be Heated
- Champagne is bottled at car-tyre pressure - and the bubbles are a second fermentation
- Chili peppers feel "hot" because capsaicin hijacks a heat-and-pain sensor
- Chocolate began as a bitter drink - and the beans were money
- Coca-Cola began in 1886 as a pharmacist's cure-all - minus the wine
- Coca-Cola is first sold at an Atlanta pharmacy
- Coca-Cola was first sold in bottles
- Coffee was discovered, by legend, when a goatherd saw his goats dancing
- Corn was bred from a scraggly grass with a handful of hard kernels
- Dietary fibre is the part of food your body is built not to digest
- Durian's Stench Is Written Into Its Genes
- Farming began about 10,000 years ago in the Fertile Crescent
- Honey never spoils - jars from ancient Egyptian tombs are still edible
- Ketchup started out as a fermented fish sauce
- Machine-sliced bread first went on sale
- Most animals make their own vitamin C - humans carry a broken copy of the gene
- MSG is the same glutamate that's naturally in tomatoes, cheese and breast milk
- Nutmeg once grew on just one tiny cluster of islands
- Of the 20 amino acids that build you, nine must come from food
- One agronomist's wheat is credited with saving a billion lives
- Prohibition begins in the United States
- Saffron is the world's most expensive spice - and it's all hand-picked
- The Day Legal Beer Came Back to America
- The first written record of Scotch whisky
- The Ice Cream Cone Mold Gets a Patent
- The legend dates Dom Pérignon's 'invention' of champagne
- The London Beer Flood drowned several people
- The Maillard reaction is the chemistry behind almost every "cooked" flavour
- The oldest known fermented drink was brewed in China around 7000 BCE
- The Peanut Is a Legume That Ripens Underground
- The potato, tomato and maize all crossed the Atlantic after 1492
- The Three Sisters Feed the Soil While They Grow
- The Tomato Was Publicly Proven Safe to Eat
- The World's First Cheese Factory
- The world's hottest pepper scores 2.69 million on the Scoville scale
- Three out of four leading food crops depend on pollinators
- Umami, the fifth basic taste, was pinned down in 1908 from a bowl of kelp broth
- Vanilla is the second-priciest spice because every flower is pollinated by hand
- Why a single gene variant makes alcohol flush hundreds of millions red
- Without vitamin C, the body literally can't hold itself together
- Worcestershire Sauce Was an Abandoned Mistake
- 'Miracle on Ice' at the Lake Placid Olympics
- "Soccer" is a British word, born from Oxford student slang
- A basketball's bounce returns only about 75% of its drop height
- A cricket ball swings because one side is polished and one is rough
- A daredevil walked a tightrope across Niagara Falls
- A French baron revived the Olympics after 1,500 years
- A knockout is your brain twisting inside your skull
- A perfect 147 break is snooker's flawless maximum
- A skydiver once broke the sound barrier with his own body
- A soccer ball's curve comes from a spinning air-pressure trick
- A stopwatch and a stripe reinvented basketball
- A Test match can last five days - and one in 1939 ran twelve
- Alex Honnold climbed 3,000 feet of El Capitan with no rope
- Ali shocked Foreman in the "Rumble in the Jungle"
- An 'over' in cricket is six balls - and the ball barely changed in 400 years
- An F1 car makes so much downforce it could, in theory, drive on the ceiling
- Aristides Wins the Inaugural Kentucky Derby
- At Le Mans, the winner is whoever drives furthest in 24 hours
- Athletes Raised Fists in Protest at the Mexico City Olympics
- BASE jumping is named after the four things you leap from
- Basketball was invented in 1891 with two peach baskets
- Billie Jean King won the 'Battle of the Sexes'
- Cal Ripken Jr. played 2,632 straight games
- Cassius Clay beats Sonny Liston for the heavyweight title
- Cricket has Laws, not rules - kept by one club at Lord's
- Cy Young's 511 Wins: Baseball's Most Unbreakable Record
- Dick Fosbury cleared the bar backwards and rewrote the high jump
- Don Bradman's Test average was 99.94 - a duck from 100
- Edwin Moses won 122 races in a row over nearly a decade
- F1 brakes glow over 1,000C and stop a car in seconds
- Football's offside rule is as old as the game's first written laws
- Gertrude Ederle Became the First Woman to Swim the English Channel
- Hank Aaron broke Babe Ruth's career home run record
- Jackie Robinson breaks baseball's color barrier
- Jahangir Khan went 555 matches without losing
- Joe DiMaggio hit safely in 56 straight games
- Kano Jigoro founded judo in 1882 from older jujitsu schools
- Mark Spitz won a then-record seven golds at Munich 1972
- Maurice Garin won the first Tour de France
- No two football pitches have to be the same size
- Nobody is sure why the chequered flag means "finish"
- Olympic gold medals are mostly silver
- Pankration was the ancient Olympics' near no-holds-barred sport
- Roger Bannister broke the four-minute mile when many thought it impossible
- Secretariat Won the Triple Crown by 31 Lengths
- Sumo grew out of Shinto ritual - and still performs it
- Tennis counts 15, 30, 40 - and calls zero "love"
- Tennis went from wooden rackets to graphite in a single decade
- The 1867 Queensberry rules turned prizefighting into modern boxing
- The ancient Olympic Games ran for nearly twelve centuries
- The Ashes is a four-inch urn that has never been a trophy
- The Athens Summer Olympics Opened
- The basketball hoop has been 10 feet high since 1891 - by accident
- The Beijing Summer Olympics opened
- The biggest crowd ever at a football match packed the Maracana in 1950
- The fastest F1 pit stop changed four tyres in 1.80 seconds
- The fastest tennis serve ever clocked at 263 km/h
- The first basketball hoops had no hole in the bottom
- The first English Football League matches were played
- The First FIFA World Cup Match Was Played
- The first football World Cup was held in Uruguay in 1930
- The first Indianapolis 500 motor race is run
- The first intercollegiate football game was played
- The first Kentucky Derby is run, and Aristides gallops into history
- The first modern Olympic Games opened in Athens
- The first official international soccer match was played
- The first organized baseball match under the Knickerbocker rules
- The first organized indoor hockey game was played in Montreal
- The First Race at the Indianapolis Motor Speedway
- The first Winter Olympic Games open in Chamonix
- The four Grand Slams are played on three different surfaces
- The javelin was redesigned because throwers got too good
- The largest wave ever surfed towered 86 feet at Nazare
- The Le Mans disaster killed more than 80 spectators
- The longest boxing match lasted 110 rounds over 7 hours
- The longest tennis match ran 11 hours over three days
- The Maracanazo silenced 200,000 fans - and changed Brazil's jersey
- The marathon is 42.195 km because of a royal viewing box
- The Modern Olympic Movement Was Founded in Paris
- The Munich Olympics Massacre Began
- The Olympic motto came from a priest's school sports day
- The Olympic rings hide the colours of every national flag
- The Olympic torch relay was invented for the 1936 Berlin Games
- The scoreboard couldn't show Nadia Comaneci's perfect 10
- The US announced a boycott of the Moscow Olympics
- The winner of the Indianapolis 500 celebrates by drinking milk
- The yellow tennis ball changed color for television
- Two climbers reached Everest's summit on lungs alone
- Usain Bolt's 9.58 seconds is the fastest 100m ever run
- Wembley Stadium opened with the chaotic 'White Horse' FA Cup Final
- What limits human sprint speed isn't muscle power - it's time
- Wilt Chamberlain once scored 100 points in a single NBA game
- Yankee Stadium Opened in New York
On this day
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- 21Alive News
- 24 Hours of Le Mans (official, ACO)
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- 9to5Mac
- A Bouncing Basketball - John Eric Goff (physics professor, author of 'Gold Medal Physics')
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- A Charlie Brown Christmas (The Peabody Awards)
- AAAS / Science
- ABC27
- ABC7 — 1st cell phone call successfully made 50 years ago by Motorola engineer Martin Cooper
- About Delaware Day
- About Switzerland (Swiss Federal Dept. of Foreign Affairs) — William Tell
- Academy Museum of Motion Pictures
- Academy of American Poets
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- Agatha Christie Limited (official)
- Age of Revolution (Waterloo Association)
- Agência Brasil (EBC)
- Air & Space Forces Magazine — Lucky Lady II
- Air Force Historical Foundation — September 17, 1908
- Alabama Bicentennial Park
- Alabama Public Television
- Alcatraz Island, Golden Gate NRA (U.S. National Park Service, via Google Arts & Culture)
- Alcoholics Anonymous
- Alexandra Palace — BBC at the Palace
- Alpinist
- America's National Churchill Museum — The Sinews of Peace ("Iron Curtain" Speech)
- American Academy of Ophthalmology
- American Alpine Club
- American Alpine Club Publications (American Alpine Journal)
- American Association of Chemistry Teachers (AACT)
- American Battlefield Trust — New Orleans
- American Chemical Society — Joseph Priestley and the Discovery of Oxygen
- American Foundation for the Blind
- American Heritage
- American History Central — Thornton Affair
- American Nuclear Society — Henri Becquerel and the Discovery of Radioactivity
- American Numismatic Association — Money Museum
- American Oil & Gas Historical Society — Nylon, a Petroleum Polymer
- American Psychological Association
- American Revolution Institute of the Society of the Cincinnati
- American Society for Biochemistry and Molecular Biology (ASBMB Today)
- American Society of Civil Engineers — Qhapaq Nan
- American Urban Radio Networks
- Americas South and North (Dr. Colin M. Snider, historian)
- Amgueddfa Cymru – Museum Wales
- Amiri Diwan of the State of Kuwait
- Ancient Pages — Foundation Stone Of The Royal Greenwich Observatory Was Laid
- Anne Frank Fonds
- Anne Frank House — Reichstag fire
- Anniversary of the Hodges meteorite falling to earth
- ANSA
- Antarctic Heritage Trust — The Expeditions of Roald Amundsen
- Apartheid Museum
- Apple Newsroom — Apple Reinvents the Phone with iPhone
- AppleInsider — Macintosh launched on Jan 24, 1984
- Apricot kernels pose risk of cyanide poisoning (European Food Safety Authority)
- Arab News
- Archaeology Magazine (Archaeological Institute of America)
- Archaeology Magazine (Archaeological Institute of America)
- Archives départementales des Côtes-d'Armor
- Arkansas Secretary of State
- Arms Control Association — The Legacy of India's Nuclear Weapons Test
- Arquivo Nacional Torre do Tombo (DGLAB)
- Art History II (SUNY / Lumen Learning)
- ASCE Metropolitan Section — First New York City Subway
- ASDSO Dam Failures and Lessons Learned
- Asia for Educators, Columbia University — The Tale of Genji
- Association for Diplomatic Studies & Training — The Berlin Wall Is Built
- Association of American Universities
- Astronomy Magazine — April 2, 1845: The first photo of the Sun
- ATF (Bureau of Alcohol, Tobacco, Firearms and Explosives)
- Atlanta Magazine — The first glass of Coke served, 1886
- Atomic Heritage Foundation / National Museum of Nuclear Science & History
- Atomic Heritage Foundation / National Museum of Nuclear Science & History — Castle Bravo
- AtomicArchive — The Mike Device is Tested
- Audubon Field Guide
- Australian Bureau of Statistics — Year Book Australia 2004, coastal population
- Australian Museum — What is a monotreme?
- Automotive History
- Babbel Magazine
- Bachhaus Eisenach — Museum der Neuen Bachgesellschaft
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- Bavarian State Library — Virtual exhibition on Zamenhof, inventor of Esperanto
- Bayern Tourismus
- Bayeux Museum — The Battle of Hastings
- BBC Science Focus Magazine
- BBC Sky at Night Magazine — 40 years since the discovery of Charon
- Beached Whale Blow-Up (Oregon Historical Society)
- Beethoven-Haus Bonn — Beethoven in Bonn timeline
- Beinecke Rare Book & Manuscript Library, Yale University
- Ben's Guide to the U.S. Government (GPO)
- Benchmarks: July 4, 1054 — Birth of the Crab Nebula (American Geosciences Institute)
- Benjamin Franklin, Codicil to his Will, 1789 - ExplorePAhistory (PA Historical & Museum Commission)
- Berlin Wall Foundation (Stiftung Berliner Mauer) — The Berlin Wall
- BGSU University Libraries — Ananse (Folktale and Fairy Tale Resources)
- Bibliotheque nationale de France (BnF)
- Bill of Rights Institute
- Billboard
- Biography.com
- BirdLife International (DataZone)
- Bishop James Ussher and the beginning of everything
- Bishop James Ussher Sets the Date for Creation: October 23, 4004 B.C.
- Bodleian Libraries, University of Oxford — "…Wonderful things…"
- Boeing
- Boston Baroque
- Boston College News
- Boston Literary History
- Boston Symphony Orchestra
- Bosworth Battlefield Heritage Centre (Leicestershire County Council)
- Boundary Stones (WETA)
- BrainFacts.org (Society for Neuroscience)
- BRANCH (Monique R. Morgan, McGill University)
- Brandeis University
- Brembo — How carbon fiber becomes the brake discs that stop the fastest cars
- Brewminate — Samuel Johnson's Dictionary of the English Language Is Published
- British Balloon Museum & Library
- British Film Institute
- British Geological Survey
- British Library
- British Online Archives (Microform Academic Publishers)
- Brookings Institution
- Brooklyn College (CUNY) — Clinton Impeachment Timeline
- Brown University - The Greek Past
- Brown University Library – Napoleon: Timeline of the Russian Campaign
- Bryn Mawr Classical Review
- Buffalo Toronto Public Media
- Bullock Texas State History Museum — Texas City Explosion
- Buseck Center for Meteorite Studies, Arizona State University
- Byrd Polar and Climate Research Center, Ohio State University
- BYU Religious Studies Center — The Early Reception of the Book of Mormon
- BYU Studies — Miqvaot: Ritual Immersion Baths in Second Temple Jewish History
- Cabinet, University of Oxford
- California Academy of Sciences
- California Governor's Office of Emergency Services (Cal OES)
- California Institute of Technology
- California State Parks: California Admission Day
- California State University, Los Angeles Library
- Caltech
- Caltech Magazine
- Calvin Institute of Christian Worship (Calvin University)
- Cambridge University Library — Chinese Oracle Bones
- Cambridge University Library — Sarajevo 1914
- Camera Museum
- Canadian Museum of History
- Canadian Olympic Committee (Team Canada)
- Canadian Space Agency — Venus
- Canberra Deep Space Communication Complex
- Canterbury Cathedral — A Walk Through Time: Becket
- Cape Canaveral Space Force Museum — Titan I
- Captain Jacob Crowninshield Brings an Elephant to New York
- Carbon Brief
- Carleton College (HIST 139, Early Modern Europe)
- Carnegie Mellon University
- Carnegie Mellon University
- Carnegie Mellon University Libraries
- Carrots were originally purple, not orange. Here's what happened (ZME Science)
- Cartoon Research — Happy Birthday Donald Duck! Walt Disney's 'The Wise Little Hen' (1934)
- Catalhoyuk Research Project
- CBS News
- Celebrating 40 Years of .Com
- Cell Biology by the Numbers
- Center for Arms Control and Non-Proliferation — Fact Sheet: The Missing Tybee Bomb
- Center for Strategic and International Studies
- Centers for Disease Control and Prevention
- Centre for Computing History — Barclays Bank installs the first cash dispenser
- CERN — A short history of the Web
- CERN Courier — 'CERN's ultimate act of openness'
- CERN Timeline — Albert Einstein publishes his theory of Special Relativity
- CERN Timeline — Sir Berners-Lee announces the WWW software on the Internet
- Chandra X-ray Observatory — Binary and Multiple Star Systems
- Charles M. Schulz Museum — Frequently Asked Questions
- Charlotte Symphony — Things you didn't know about Beethoven's Symphony No. 9
- Château d'Amboise — Leonardo da Vinci
- Chester F. Carlson, Innovation Hall of Fame
- Chicago Architecture Center
- Chicago History Museum
- Christ's College, University of Cambridge
- Christian History Institute — 1456 Gutenberg Produces the First Printed Bible
- Christopher Columbus - Ages of Exploration
- Christopher Columbus — Florida Museum of Natural History
- Chronik der Mauer
- Church History — Book of Mormon First Edition (1830)
- Cinema Treasures
- CIRAD
- City A.M. — On this day: May 26 1896, the first Dow Jones Industrial Average is published
- City of Paris
- City of Salem, New Jersey
- City of St. Joseph, Missouri
- City of Worms
- Clara Barton biography
- Classic FM
- Cleveland Clinic — Skeletal System
- Cleveland Museum of Art — Man with a Guitar (Braque)
- Cleveland State University — World Religions: The Spirit Searching (open textbook)
- Clinton White House Archives — June 26, 2000 Remarks
- Coenraad van Houten — Chocolate: Food of the Gods, Cornell University Library
- College de France
- Columbia Law School — Bernard E. Harcourt, The Communist Manifesto: An Introduction to Marx
- Columbia University — The Core Curriculum (Core Centennial): The Pietà by Michelangelo Buonarroti
- Comité Champagne — Champagne and its history
- Comite International Pierre de Coubertin
- Communications Psychology (Nature)
- Comparative Advantage and the Benefits of Trade
- Compound Interest — The Mohs Hardness Scale
- Computer History Museum
- Concorde First Scheduled Services
- Coney Island History Project — La Marcus Edna Thompson
- Congress and Tourism Center Nuremberg
- Conquering the Ice: Byrd's Flight to the South Pole
- Conservation International
- Consulate of San Marino to the UK
- Convention Respecting an Extension of the Hongkong Territory (treaty text)
- Cornell Chronicle
- Cornell University
- Cornell University ILR School, The Triangle Factory Fire
- Cornell University Library
- Cortical Reorganization after Limb Loss: Bridging the Gap between Basic Science and Clinical Recovery
- Council of Centers on Jewish-Christian Relations
- Countway Library, Harvard Medical School
- Coventry Transport Museum
- Crown Office and Procurator Fiscal Service (Scotland) — Lord Advocate statement
- CSIRO — Monitoring our vast and varied coasts
- CTP Cryogenics
- Cult of Mac — Apple founded to sell Apple-1 computer
- CVCE — Explosion of the first British H-bomb (Malden Island, 15 May 1957)
- Czech Technical University in Prague, Faculty of Information Technology
- D23 — Donald Duck Debuts in The Wise Little Hen
- Daëron et al., Sources of the large A.D. 1202 and 1759 Near East earthquakes (Geology; IPGP, Institut de Physique du Globe de Paris)
- Danny Quah, LSE Maths blog
- Darlington Borough Council
- DARPA
- Darwin Correspondence Project — Voyage of HMS Beagle (University of Cambridge)
- De Imperatoribus Romanis (Loyola University Chicago)
- Death Penalty Information Center
- Deeper Japan — Sumo: Tradition, Religion, and Sport
- Denver Art Museum — The First Meeting Between Motezuma and Cortes in the City of Mexico
- Department of Natural Resources and Environment Tasmania
- Deseret News
- Design World
- Deutsches Museum — Benz-Patent-Motorwagen Nr. 1
- Deutschland.de — Day of German Unity
- Dictionary of National Biography, Vol. 40 (Newton)
- Dictionary.com
- Die Hanse (Union of Cities THE HANSA)
- Die Welt der Habsburger (Schönbrunn Group)
- Directory of American Tool and Machinery Patents — US Patent 132
- Ditsong Museums of South Africa
- Do Identical Twins Have the Same Fingerprints? (Healthline)
- DOBES / Max Planck Institute — Taa language documentation
- Documenting the American South, University of North Carolina
- Double 10: The Wuchang Uprising and the end of the Qing — The China Project
- DPMA (German Patent and Trade Mark Office)
- Dr. George Pararas-Carayannis (Tsunami Society)
- Drake Well Museum (Pennsylvania Historical & Museum Commission)
- Driver61 - Project Inversion
- Duke University Libraries — A Mockery of Justice: The Dreyfus Affair (exhibit)
- DVIDS (U.S. Department of Defense)
- EarthDate — World's Tallest Mountain
- Earthquake Catalog of the Dead Sea — 1759 CE Safed and Baalbek Quakes (citing Ambraseys & Barazangi, 1989, J. Geophys. Res.)
- EarthSky — Luna 1, 1st spacecraft headed to the Moon
- Easter Island Ship Logs: Jacob Roggeveen, 1722
- Eastman School of Music
- EBSCO Research Starters — 'Misinformation effect'
- EclipseWise (Fred Espenak)
- Edgar Allan Poe Society of Baltimore
- EDN — Faraday Discovers Electromagnetic Induction, August 29, 1831
- Egypt Ministry of Tourism and Antiquities
- EH.net (Economic History Association) - Gresham's Law
- Eisenhower Presidential Library
- Ekrem Buğra Ekinci
- Élysée (French Presidency)
- Embryo Project Encyclopedia (Arizona State University) — Enovid: The First Hormonal Birth Control Pill
- Emerson Kent — I Am Not a Crook, Richard Nixon 1973
- Emory University News — The segregated Atlanta premiere of 'Gone With the Wind'
- Encyclopædia Britannica
- Encyclopaedia Romana: The Ides of March
- Encyclopedia of Arkansas (Central Arkansas Library System)
- Encyclopedia Titanica — Maiden Voyage
- Encyclopedia Virginia (Virginia Humanities)
- Encyclopedia.com
- Engineering Hall of Fame — John Logie Baird
- Engineering Rome (University of Washington)
- England and Wales Court of Appeal
- English Heritage — What Happened at the Battle of Hastings
- Eos (American Geophysical Union) — Cameroon's Lake Nyos Gas Burst: 30 Years Later
- EPA Health & Environmental Research Online (HERO)
- Equal Justice Initiative — A History of Racial Injustice
- Equal Justice Initiative — A History of Racial Injustice (March 7)
- Ericsson — Bell, Gray and the invention of the telephone
- ESA Science & Technology
- ESA/Hubble
- Esperantic Studies Foundation — State of the art: Esperanto linguistics
- ESPN Press Room — ESPN, Inc.: 1979 in Review
- Etxepare Basque Institute
- EUR-Lex — Treaty of Rome (EEC)
- Euronews
- European Commission — Culture
- European Geosciences Union (EGU)
- European Network Remembrance and Solidarity
- European Parliament
- European Parliament — The Maastricht Treaty
- European Space Agency
- European Stability Mechanism — 20 years ago, the euro was launched
- European Union — The euro: history and purpose
- Eurostar — The Channel Tunnel
- Everest at 70 — Sedgwick Museum of Earth Sciences, University of Cambridge
- Evergreen Aviation & Space Museum — The Spruce Goose
- EWTN Vatican
- Exchange History (Capital Amsterdam Foundation)
- FactCheck.org
- Fantasound: Disney's 1940 attempt at surround sound
- FDA — Approval of First Gene Therapies for Sickle Cell Disease
- FDR Presidential Library & Museum — Executive Order 9066
- Federal Office for the Safety of Nuclear Waste Management (BASE) — The Chernobyl accident
- Federation of American Scientists — India Nuclear Forces
- Field Museum
- FIFA - 5 billion engaged with the FIFA World Cup Qatar 2022
- First Monday — A brief history of Facebook as a media text
- First Sounds — Scott's Phonautograms
- First Versions — The New York Times
- Fischer et al. (2011), Psychological Bulletin — via ERIC
- Florida Center for Instructional Technology, University of South Florida
- Florida Department of State
- Florida Historical Society
- Folger Shakespeare Library
- Folger Shakespeare Library — Letter describing the burning of the Globe
- Food and Agriculture Organization of the UN
- Formula 1 (official)
- Forum of Mathematics, Pi (Cambridge University Press)
- Foundation of the Hellenic World — Olympic Games: Pankration
- FOX 35 Orlando
- Fox News — On this day in history, June 29, 2007, the first iPhone goes on sale
- FOX Sports
- Fox Weather — Happy birthday, National Weather Service
- France Ministry for Europe and Foreign Affairs
- Frank Lloyd Wright Foundation — Concerning the Solomon R. Guggenheim Museum
- Frank Sinatra, The Voice — Hoboken Historical Museum
- Freeman: On the Origin of Species — Darwin Online (University of Cambridge)
- Friesens — August 19 is World Photography Day
- Gaetano Bresci — Dizionario di Storia
- Gale Blog — BBC Celebrates Its Centennial
- GALILEO, University System of Georgia — On This Day in 1492, Columbus Sailed the Ocean Blue
- Galleria dell'Accademia di Firenze: Basic Facts about Michelangelo's David
- Gallica (Bibliotheque nationale de France)
- Gascon Rolls Project (King's College London)
- Gateway Arch
- Geology.com — Volcanic Explosivity Index
- Geophysical Journal International (Oxford University Press)
- George W. Bush White House Archives
- Georgia Historical Society — Dr. Crawford W. Long and Anesthesia for Surgery
- Gerald R. Ford Presidential Library & Museum — The Watergate Files
- German Archaeological Institute (DAI)
- German History in Documents and Images (German Historical Institute)
- Getlink (Eurotunnel) Press — Official inauguration of the Channel Tunnel, 6 May 1994
- Getlink / Eurotunnel (concessionaire-operator)
- GFZ German Research Centre for Geosciences — 100 years of continental drift theory
- Giordano Bruno Whorl - Lunar Reconnaissance Orbiter Camera
- Girl Museum
- Glamorgan Archives
- GLBT Historical Society – Rainbow Flag
- Golda Meir Center for Political Leadership, Metropolitan State University of Denver
- Golden Bay Museum — Abel Tasman historical background
- Golden Gate Bridge, Highway & Transportation District
- Google — How Search Works (Ranking results)
- Google Patents — US1125476A
- Google Research — Web Search for a Planet: The Google Cluster Architecture
- Google Workspace Blog — Celebrating 50 years of email
- GOV.UK
- Government of Canada (Department of Justice)
- Government of Poland (gov.pl)
- Government of Slovenia — 30 Years of Slovenia's Independence
- GovInfo (U.S. Government Publishing Office) — Anniversary of the Establishment of the Library of Congress
- Grace's Guide — Big Ben
- Graceland (official Elvis Presley estate)
- Grateful American Foundation — Who crossed Niagara Falls on a tightrope today?
- Great Fire of Rome in A.D. 64 — Facts and Details
- Greek Reporter — The Discovery of the Venus de Milo Statue
- Greeting Card Association
- Griswold v. Connecticut (1965), Legal Information Institute (Cornell Law)
- Griswold v. Connecticut (1965), Supreme Court Historical Society
- GS1 UK
- GSA Today (Geological Society of America)
- guacamole = avocado sauce — Linguistic Discovery (Daniel W. Hieber, PhD)
- Guinness World Records
- Hagia Sophia & Its Transformations — Fordham University (SAPIENTIA)
- Hagley Museum and Library — January 25, 1915, Alexander Graham Bell
- Handbook of Texas — Clyde Chesnut Barrow
- Hanover College Historical Texts — Decrees of the National Convention
- Harry Ransom Center, University of Texas at Austin
- Harvard Business School — Edwin H. Land & Polaroid: Introducing One-Step Photography
- Harvard Gazette — Octopus suction cups hold its taste and touch sensors
- Harvard Health Publishing — A placebo can work even when you know it's a placebo
- Harvard Organismic & Evolutionary Biology
- Harvard University
- Harvey Mudd College
- Hattie McDaniel (1893–1952) — Denver Public Library Special Collections and Archives
- Heinz History Center
- Herbert Hoover Presidential Library (US National Archives)
- Hessels et al., Science (preprint)
- Historic England
- Historic Environment Scotland
- Historic Environment Scotland
- Historic Missouri (University of Central Missouri History Program): Chillicothe Baking Company, Home of Sliced Bread
- Historic Scotland: The devolution referendum of 1997 — STV News
- Historic Towns of America — First Baseball Game
- Historic UK
- Histories of the National Mall (George Mason University)
- Historisch-archivalisches Institut
- HISTORY
- History — IEEE Power & Energy Magazine
- History — The Baltic Way
- History and Headlines — American Express Founded
- History Facts — Sweden switched from driving on the left to the right
- History Hit
- History Matters (George Mason University) — The Times Reports on 'the Day of Two Noons'
- History of Coffee
- History of Science in Latin America and the Caribbean (University System of New Hampshire)
- History Skills
- HistoryCentral — 1819 Savannah Crosses the Atlantic
- HistoryLink.org — FDA approves birth control pill, May 9, 1960
- HistoryNet — Broken Arrow: Case of the Lost H-Bomb
- HistoryPod — Greenwich time signal pips broadcast by the BBC
- Hobart and William Smith Colleges
- Hodges Meteorite Strike (Sylacauga Aerolite)
- Hohe Domkirche Köln (Cologne Cathedral)
- Holocaust Memorial Day Trust — 19 April 1943
- Honeycrisp tree from seed — Ask Extension
- Hoover Institution — The Speech That Shook the World
- Houston Symphony
- How many times must you fold a paper to reach the Moon? — Big Think
- How Ponzi Prospered (Fraud Magazine)
- HowStuffWorks
- HowStuffWorks
- Hudson River Maritime Museum — Captain William Kidd
- Hudson River Valley Institute
- Human Fertilisation and Embryology Authority — Mitochondrial donation treatment
- Human Relations Area Files (Yale University)
- HyperPhysics: Ferromagnetism
- IAU — Result of the 2006 Resolution votes (press release)
- iBiology
- Ideal Lift of a Spinning Ball - NASA Glenn Beginner's Guide to Aeronautics
- IEEE Communications Society
- IEEE Spectrum
- IFAB - Laws of the Game, Law 1: The Field of Play
- IFLScience
- Illinois Department of Natural Resources
- Illinois Institute of Technology — How a Phone Call Sparked a Technological Revolution
- Illinois Mathematics and Science Academy
- Illinois Public Media
- Illinois State Museum
- Immaculate Conception Defined by Pius IX
- Immigrant Entrepreneurship (German Historical Institute): William Edward Boeing
- Imperial War Museums
- In 1882, Labor Day originated with a parade held in NYC — 6sqft
- Independent Azerbaijan — Presidential Library
- Indiana Historical Bureau (in.gov)
- Indianapolis Motor Speedway Museum
- Ineffabilis Deus (full text, 1854)
- Innocence Project — Eyewitness Misidentification in DNA Exonerations
- INSEAD Publishing — Kongo Gumi: The Oldest Continuously Operating Business
- Institut Pasteur: The history of the first rabies vaccination in 1885
- Institute of Human Origins, Arizona State University — About the Fossil Lucy
- Intel
- Interactions.org — CERN and UNESCO Celebrate Anniversary of the CERN Convention
- International Boundary Commission
- International Boxing Hall of Fame — John Graham Chambers
- International Center for Language Studies
- International Churchill Society — Churchill, Watson-Watt and the Development of Radar
- International Dairy Foods Association
- International Energy Agency — World Energy Outlook 2020
- International Gem Society — Gemstone Hardness and Wearability
- International Hydropower Association — Pumped storage hydropower
- International Judo Federation - Hall of Fame: Kano Jigoro
- International Maglevboard
- International Monetary Fund - Back to Basics: GDP
- International Olympic Committee
- International Skydiving Museum & Hall of Fame
- International Union of Railways (UIC)
- Internet Archive
- Internet Hall of Fame — Raymond Tomlinson
- Internet Medieval Sourcebook (Fordham University) — The Primitive Rule of the Templars
- Internet Shakespeare Editions, University of Victoria
- Internet Society (hosted by UC Santa Barbara)
- INTERPOL - How our history started
- Intrepid Museum
- Introducing New Coke (Harvard Business School case)
- Inverse
- Ipswich History — Abdication and Ipswich
- Israel Antiquities Authority - The Dead Sea Scrolls
- Italian Art Society — Leonardo da Vinci was born on 15 April 1452, in Anchiano, near Vinci
- ItalianRenaissance.org — Michelangelo's Pietà
- Italy On This Day — Galileo Galilei convicted of heresy
- ITF Rules of Tennis 2026 (Appendix I — The Ball)
- IUCN — Peatlands and climate change
- J. Willard Marriott Library, University of Utah — Transcontinental Railroad / Golden Spike
- Jacob Roggeveen — Princeton University Library
- Jainpedia — Monastic equipment
- James Lind Library
- James Monroe Museum and Memorial Library (University of Mary Washington)
- Jane Austen Society of North America — Pride and Prejudice
- Japan International Research Center for Agricultural Sciences (JIRCAS)
- Japan Ministry of Education, Culture, Sports, Science and Technology (MEXT)
- Japan National Tourism Organization — Mikimoto Pearl Island
- Jewish Museum Berlin
- Jewish Theological Seminary
- Jewish Virtual Library — The Capture of Jerusalem by Saladin
- Johann Sebastian Bach — A chronology, Bach-Archiv Leipzig
- John Cage Organ Project, Halberstadt
- John Wayne — California Museum (California Hall of Fame inductee)
- John Wayne, 72, Dies of Cancer — Variety
- Johns Hopkins Applied Physics Laboratory
- Joint Quantum Institute (University of Maryland) — Planck and the Birth of Quantum Mechanics
- Journal of Comparative Neurology (PubMed)
- Journal of Experimental Biology
- Journal of Military and Veterans' Health (Australian Military Medicine Association)
- JSTOR Daily
- JSTOR Daily — On This Day: The Founding of Rome
- JSTOR Daily — On This Day: The Metropolitan Museum of Art Opens Its Doors
- Judiciary Act of 1789 Establishes Federal Courts
- June 12, 1987: Address from the Brandenburg Gate — Miller Center, University of Virginia
- June Fourth Museum (8964 Museum)
- Kansas State University, K-REx Institutional Repository — Peirce, K. (2023), "Structural design considerations for super-tall buttressed core structure: the Burj Khalifa"
- Karl Popper: Philosophy of Science — Internet Encyclopedia of Philosophy
- KCUR: A Missouri town almost forgot it invented sliced bread
- Keith Prowse (Official Wimbledon Hospitality)
- Kentucky Derby (official)
- Kikunae Ikeda - Umami Information Center
- Killing of Joseph Smith — All That's Interesting
- Kokugakuin University — Encyclopedia of Shinto / Contemporary Papers on Japanese Religion
- Kon-Tiki Museum
- Kongo Gumi Co., Ltd. (official company site)
- KQED
- La morte del Re — Comune di Monza
- Lang Antiques — Antique Jewelry University: Kokichi Mikimoto
- Language Log (University of Pennsylvania)
- Languagehat (citing Peter Gainsford)
- Lascaux — The Discovery (French Ministry of Culture)
- Lawn Tennis Association (LTA)
- Lawrence Berkeley National Laboratory
- Lawrence Livermore National Laboratory
- Le Moyne College — Falcone Library: The 24-Second Shot Clock
- League of Women Voters — 19th Amendment Ratified August 18, 1920
- Legislative Assembly of British Columbia
- Leisure & Culture Dundee — Tay Rail Bridge Disaster 1879
- Lemelson-MIT Program
- LeonardoDaVinci.net — Last Wishes and Gravesite
- Liberty, Equality, Fraternity (Roy Rosenzweig Center for History and New Media, George Mason University) — The Burning of Moscow as Seen by One of Napoleon's Generals
- Library and Archives Canada Blog
- Library of America
- Library of America — Reader's Almanac
- Library of Congress
- Library of Congress
- Library of Congress — Dow Jones Industrial Average First Published (This Month in Business History)
- Library of Congress — Federal Research Division, Country Profile: Bolivia
- Library of Congress Country Studies
- Library of Virginia, Document Bank of Virginia
- LibreTexts Chemistry
- Life Begins — Princeton University Graphic Arts Collection
- LIGO / Caltech
- Lincoln's Assassination
- Linda Hall Library
- Lindores Abbey Distillery — Friar John Cor
- Lithuanian National Olympic Committee
- Live Science: What is the largest squid?
- Livius.org — Royal Road
- LLILAS Benson, University of Texas at Austin
- Loftus & Palmer (1974), via SimplyPsychology
- London Fire Brigade — The Great Fire of London
- London Museum
- Lord's / MCC
- Los Alamos National Laboratory
- Los Angeles Philharmonic
- Love Me Do: 60 Years — The Beatles Story Museum, Liverpool
- Lowell Observatory
- Lowell Observatory Archives — The Story of Pluto
- Lumen Learning — The Last Julio-Claudian Emperors (Western Civilization)
- Luther.de
- MacTutor History of Mathematics
- MacTutor History of Mathematics Archive (University of St Andrews) — Isaac Newton
- Magdalene College, University of Cambridge
- Mahatma Gandhi: eviction from a South African train, Global Indian
- MARCS Institute, Western Sydney University
- Market Histories
- Marks & Clerk — Bell and the patenting of the telephone
- Marriage — Historic Jamestowne
- Marxists Internet Archive
- Mason City Municipal Airport — The Day the Music Died
- Mass Moments — Charles Goodyear Receives Patent for Vulcanized Rubber
- Massachusetts General Hospital Museum
- Massachusetts Historical Society — Perspectives on the Boston Massacre
- Max Planck Institute for Evolutionary Anthropology
- Max Planck Institute for Psycholinguistics
- Mayflower 400 — The Journey to 16 September
- MayflowerHistory.com
- McGill University Office for Science and Society
- Medievalists.net — The Pied Piper of Hamelin: A Medieval Mass Abduction?
- MedlinePlus Genetics (U.S. National Library of Medicine) — Mitochondrial DNA
- Menéndez et al., Scientific Reports — The Global Flood Protection Benefits of Mangroves
- Mental Floss - The Boxing Match That Lasted 7 Hours
- Mercedes-AMG PETRONAS F1 Team
- Mercedes-Benz
- Merton College, University of Oxford
- Met Office
- Metropolitan Opera (educator guide)
- Microsoft
- Microsoft Learn — The History of Microsoft, 1986
- Milestones in U.S. patenting — USPTO
- Milwaukee Public Library
- Ministry of Foreign Affairs of the People's Republic of China
- Ministry of Land, Infrastructure, Transport and Tourism (Japan) — White Paper: Sarin Subway Incident
- Mission San Juan Capistrano
- Mississippi Department of Archives and History
- Missouri State University (BearWorks / Journal of Popular Culture)
- MIT (Hartshorne, Tenenbaum & Pinker, Cognition)
- MIT McGovern Institute
- MIT News
- MIT News — Riddle solved: Why was Roman concrete so durable?
- MIT School of Engineering
- Mitochondrial Eve (ISOGG Wiki, International Society of Genetic Genealogy)
- MNopedia — Minnesota Historical Society
- Monday Morning Memo — Reno Is West of L.A.
- MoneyWeek — 10 February 1906: HMS Dreadnought is launched
- Monuments Men and Women Foundation
- Moonblink Eclipse Catalogue
- Mother Teresa of Calcutta Center
- MotorCities National Heritage Area
- Motorsports Hall of Fame of America
- Mozarteum / Köchel-Verzeichnis — KV 16, Symphony in E-flat
- Muhammad Ali Center
- Musée Carnavalet
- Musee du Louvre - The Code of Hammurabi
- Museo Egizio
- Museum of Broadcast Communications
- Museum of Broadcast Communications
- Museum of Modern Art — Ray Tomlinson and the @ symbol
- Museum of the City of New York
- Museum of Ventura County
- museum-digital
- Museums Association
- Museums Worcestershire
- Mystic Stamp — This Day in History
- Mythopedia — Yggdrasil
- NAACP
- NAB Broadcasting Hall of Fame
- Napoleon en Seine-et-Marne — April 1814 abdication
- NASA
- NASA
- NASA
- NASA - Eclipses and the Moon's Orbit
- NASA Goddard Blueshift — How Many Stars in the Milky Way?
- NASA Goddard Imagine the Universe
- NASA Jet Propulsion Laboratory
- NASA Precipitation Education (GPM)
- NASA Science
- NASA Scientific Visualization Studio
- NASA Space Place — What Is a Barycenter?
- NASA Spinoff
- NASA StarChild
- National Aeronautic Association — Mackay Trophy recipients (1949)
- National Army Museum
- National Baseball Hall of Fame
- National Bell Festival
- National Council of Teachers of English
- National Endowment for the Arts — Ten Things to Know About A Christmas Carol
- National Eye Institute (NIH)
- National Film Board of Canada — February 15, 1965: Raising Canada's New Flag
- National Film Preservation Foundation
- National Geographic
- National Geographic Education
- National High Magnetic Field Laboratory (Magnet Academy)
- National Human Genome Research Institute — Human Genome Project Results
- National Institute of Standards and Technology
- National Institute of Standards and Technology (NIST)
- National Inventors Hall of Fame
- National Law Enforcement Officers Memorial Fund
- National Library of Ireland — NLI Live Aid Archive Goes Digital
- National Library of Medicine (PMC)
- National Library of Scotland
- National Library of Sweden (Kungliga biblioteket) — Dagen H
- National Motor Museum
- National Museum of Australia
- National Museum of Australia — The First Fleet arrives at Sydney Cove
- National Museum of Health and Medicine
- National Museum of Racing and Hall of Fame
- National Museum of the Pacific War — The Battle of Iwo Jima
- National Museums Liverpool — Top 10 facts about the Terracotta Warriors
- National Museums Scotland — The story of Dolly the sheep
- National Park Service
- National Radio Astronomy Observatory
- National Railway Museum
- National Records of Scotland (Scottish Archives for Schools)
- National Science and Media Museum
- National Science Foundation
- National Security Archive (George Washington University) — Castle Bravo at 70
- National Security Archive, George Washington University
- National September 11 Memorial & Museum — Investigation of the 1993 Bombing
- National Transportation Safety Board
- National University of Singapore Libraries
- National Wallace Monument — The Battle of Stirling Bridge
- National Weather Service — How Hot Is Lightning?
- National Women's Hall of Fame
- National WWI Museum and Memorial
- NATO — The North Atlantic Treaty (official text)
- Natural History Museum
- Natural History Museum of Utah (University of Utah)
- Nautilus
- Navajo Nation Parks & Recreation
- NC Dept. of Natural & Cultural Resources — Virginia Dare, First English Child in the New World
- NC State Extension — The Honey Bee Dance Language
- Nebraska Department of Banking & Finance
- Neuroscience News — 'Dunbar's Number... 30 years of scrutiny'
- New Amsterdam History Center - The Schaghen Letter
- New Atlas — November 2, 1936: the beginning of television
- New Bedford Whaling Museum
- New Coke: The Most Memorable Marketing Blunder Ever?
- New England Historical Society — Roger Williams Lands in Boston
- New Georgia Encyclopedia — Crawford Long (1815–1878)
- New Mexico Museum of Space History — Clyde W. Tombaugh
- New Netherland Institute
- New World Encyclopedia
- New York City Landmarks Preservation Commission
- New York Racing Association
- New York State Department of Labor
- New York State Empire State Plaza
- New York Transit Museum — Subway Day
- New Zealand Ministry for Women
- Newsweek — Titanosaur was the biggest dinosaur to ever live
- Newton and the South Sea Bubble
- NHS
- Niagara Falls Info — The Great Blondin
- Niagara Falls National Heritage Area
- NIDCD (National Institute on Deafness and Other Communication Disorders, NIH)
- Nielsen et al., Science (2016) via AAAS/ScienceDaily
- NIH National Institute of General Medical Sciences — Genetics by the Numbers
- NIH NIAAA - Alcohol Flush and Cancer Risk
- Nintendo — スーパーマリオブラザーズ (official Famicom software page)
- Nippon.com — Sumo for the Kami
- NIST Chemistry WebBook
- NOAA / NWS Heritage — Tragedy on Lake Superior
- NOAA Atlantic Oceanographic and Meteorological Laboratory
- NOAA Center for Tsunami Research
- NOAA Climate.gov — Understanding blue carbon
- NOAA Damage Assessment, Remediation, and Restoration Program
- NOAA Fisheries
- NOAA Global Monitoring Laboratory — Trends in Atmospheric Carbon Dioxide
- NOAA National Centers for Environmental Information
- NOAA National Centers for Environmental Information — Significant Earthquake Database (1923 Japan, Kanto)
- NOAA National Ocean Service
- NOAA National Severe Storms Laboratory — Lightning Basics
- NOAA NESDIS — This Day in History: Mount Tambora
- NOAA Ocean Exploration
- NOAA Office of Response and Restoration — Deepwater Horizon Oil Spill
- Nordics.info (Aarhus University)
- North Carolina History — Virginia Dare (1587 – ?)
- Northeastern University - Wimbledon grass courts physics
- Northern Illinois University School of Music
- Northwestern University
- November 12, 1980: Voyager 1 Flyby of Saturn
- NPR
- NSW Government — Captain Cook's Landing Place
- NTSB Safety Compass — Remembering Tenerife
- NYC Department of Records & Information Services
- Nylon: A Revolution in Textiles — Science History Institute
- NYSE — The History of NYSE
- Ocean Conservancy: Master of Disguise
- October 4th 1582: Last Day of the Julian Calendar
- October 4th, 1957: Leave It to Beaver premiered on CBS television
- October 5th, 1962: First James Bond Film 'Dr. No' Premieres — The Vintage News
- OECD Nuclear Energy Agency — Chernobyl: The Site and Accident Sequence
- Of God and goodbyes — Columbia Journalism Review
- Office of Defender Services, Administrative Office of the U.S. Courts
- Office of Naval Research — Trieste's Record-Breaking Deep-Sea Dive
- Office of the Governor of Maine
- Ohio State University — Real-World Relativity: GPS
- Ohio State University (CFAES) — Role of Soil Bacteria
- Olympedia — 1924 Winter Olympics Overview
- Omniglot
- On This Date: The Deadliest Atlantic Hurricane — Weather.com
- On this day, government begins under our Constitution
- On this Day, January 11 1982: Steve Davis made snooker's first televised 147 - The Irish News
- Online Etymology Dictionary
- Opera di Santa Croce
- Opera North — "The Magic Flute in a nutshell"
- Optica (formerly OSA)
- Order of the Arrow, Scouting America
- Origins (Ohio State University & Miami University)
- Otis
- Our American Revolution — The Stamp Act
- Our history — International Committee of the Red Cross
- Our World in Data: Urbanization
- Oxford University Press (OUPblog)
- PAC-MAN History (official)
- Pacific Northwest National Laboratory — High-Efficiency Lighting
- Pan Am Historical Foundation
- Panama Canal Authority (Autoridad del Canal de Panamá)
- Papal Encyclicals Online
- Paper Folding (F-LE, A-CED task) — Illustrative Mathematics
- Parks Canada
- Parks Canada
- Patent of the Day: Improved Sweeping Machine (Vacuum), Suiter Swantz IP
- Patriots Point Naval & Maritime Museum
- Paul Revere House — The Real Story of the Midnight Ride
- PBS — Evolution Library (WGBH)
- PBS — Secrets of the Dead (The Alcatraz Escape)
- Penn Museum - Earliest Alcoholic Beverage in the World
- Penn State Extension
- Penn State University
- Penn State University Libraries — Christopher Latham Sholes biography
- Penn Today - 9,000-Year History
- Pennsylvania Center for the Book
- Pennsylvania Historical & Museum Commission — Pennsylvania Charter to William Penn
- Perception (Simons & Chabris, 1999)
- Permanent Mission of the Republic of Cyprus to the United Nations
- Perseus Digital Library (Tufts University)
- Pew Research Center
- Philadelphia Museum of Art
- Phys.org (reporting Newcastle University study)
- Physics Today (American Institute of Physics)
- Pilgrim Hall Museum — The Mayflower Compact
- Pitt Rivers Museum, University of Oxford — Revolving musket
- Pittsburgh Ballet Theatre
- Plimoth Patuxet Museums
- PLOS ONE (Erickson et al.)
- Plus Magazine (University of Cambridge)
- Pocahontas — National Women's History Museum
- Pompeii Archaeological Park — The Casts
- Popular Archaeology
- Popular Science — On August 6, 1991, Tim Berners-Lee introduced the World Wide Web
- Porsche Newsroom
- Portugal Property
- Prefeitura do Rio de Janeiro (MultiRio)
- Presidência da República Portuguesa
- Press and Information Office, Republic of Cyprus
- Princeton University Press — The Final Days of Albert Einstein
- Pritzker Military Museum & Library — The Battle of Puebla, May 5, 1862 and Cinco de Mayo
- Programming a Computer for Playing Chess (Claude E. Shannon, 1950)
- Project Gutenberg (University of Nebraska Studies: Astronomical Lore in Chaucer, Florence M. Grimm)
- PSL Explore (Paris Sciences et Lettres University) — Marie Curie: First discoveries
- Psychology of Language (Thompson Rivers University)
- Purdue University
- Pushkin State Museum of Fine Arts — The Red Vineyards at Arles
- Quaker history notes: Dissolution of the Rump Parliament
- Quanta Magazine
- RAF Museum Collections
- Re-Examining the Role of Hydrogen Peroxide in Bacteriostatic and Bactericidal Activities of Honey (Frontiers in Microbiology)
- Reading Museum
- Remembering December 3, 1967 — University of Cape Town
- Reticular Activating System — overview (ScienceDirect)
- Revolutions Newsstand (International Press Correspondence, 1927)
- RFC Editor (RFC 1, original document)
- Rhode Island Historical Society — Roger Williams and the Founding of Rhode Island
- Rice University — John F. Kennedy Speech
- Richland County History — Power On: Tappan Microwaves 1955
- Rijksmuseum - Tulip book from the Six Collection
- Robert F. Kennedy Assassinated at the Ambassador Hotel
- Robert F. Kennedy Gravesite
- Robert Koch Institute (RKI)
- Robert Menzies Institute, University of Melbourne
- Rock and Roll Hall of Fame and Museum Library — Live Aid 1985
- Roman Empire (educational reference)
- Ronald Reagan Presidential Library (NARA)
- Roots — National Heritage Board, Singapore
- Roper Center for Public Opinion Research, Cornell University
- Royal Armouries
- Royal Botanic Gardens, Kew — Titan arum
- Royal Mint Museum — William Wyon & the Penny Black
- Royal Museums Greenwich
- Royal Navy Museums — Trafalgar Day: The Battle of Trafalgar
- Royal Observatory Greenwich
- Royal Society of Chemistry
- Royal Society of Chemistry
- Royal Society of Chemistry
- RTBF
- RTÉ Century Ireland
- Russell Museum — Battle of Kororareka
- RussianSpaceWeb
- Rutgers University
- Rutgers University Athletics — The First Game: Nov. 6, 1869
- Rutgers University Libraries
- Saint Joan of Arc — General Audience of Benedict XVI, 26 January 2011 (Vatican)
- Salem Witch Museum
- Salzburg.info — Silent Night
- San Diego State University, Jonestown Institute
- San Diego Zoo Wildlife Alliance
- San Francisco Conservatory of Music
- Sarpy County, Nebraska
- Saudi General Authority for Statistics (GASTAT)
- Sci.News
- Science and Industry Museum — Baby and modern computing
- Science in Public — 2009 Prime Minister's Prize for Science (John O'Sullivan)
- Science in the Classroom (AAAS)
- Science Learning Hub (New Zealand)
- Science Museum
- Science Museum (UK) — 150 years of the Periodic Table
- Science Museum Group
- Science Museum Group Collection
- Science News — How octopuses 'taste' things by touching
- Science News Explores — Soil and its inhabitants by the numbers
- Science Notes — Are Olympic Gold Medals Real Gold?
- Scientific American
- Scotch Whisky Association — The Story of Scotch
- Scotland v England: The World's First Football International Fixture
- Scotland v. England: 150 years of international football
- Scotland's People — The Tay Bridge Disaster
- Scottish Canals — The Falkirk Wheel
- Scouting Magazine
- ScreenRant
- Seattle Municipal Archives — The City of Seattle and the 1962 World's Fair
- Secretariat of the Antarctic Treaty — The Antarctic Treaty
- Securities and Exchange Commission Historical Society — Self-Regulatory Organizations
- Senate of Canada — Image of a nation: The Maple Leaf at 60
- setlist.fm — The Rolling Stones at Marquee Club, London, July 12, 1962
- Seton Hall University, Journal of Diplomacy and International Relations
- Seventeen Moments in Soviet History (Michigan State University) — Union Treaty
- SG101
- Shakespeare Birthplace Trust
- Sikh Coalition
- Simon Fraser University Digital Humanities Innovation Lab
- Simple Flying: How Boeing Was Founded
- SINC (Servicio de Información y Noticias Científicas, FECYT)
- Skeptical Science — The runaway greenhouse effect on Venus
- Sky HISTORY
- SLAC National Accelerator Laboratory
- Slavonia Sends an SOS — Ocean Liners Magazine
- Smarthistory
- Smarthistory: Pyramid of Khufu (via LibreTexts)
- Smithsonian — Lemelson Center, Invention Stories
- Smithsonian Insider — Apple "Classic" Macintosh Personal Computer, 1984
- Smithsonian Institution — Human Origins Program, Australopithecus afarensis
- Smithsonian Libraries
- Smithsonian Libraries and Archives — Darwin's On the Origin of Species Was Published Today, in 1859
- Smithsonian Magazine
- Smithsonian National Air and Space Museum
- Smithsonian National Museum of American History
- Smithsonian National Museum of Natural History
- Smithsonian National Museum of the American Indian — The Calendar System
- Smithsonian Ocean
- Smithsonian's National Museum of Asian Art
- Smithsonian's National Zoo & Conservation Biology Institute
- SMU Research - Weyand et al. on running speed limits
- Société Historique de Compiègne
- Society for American Baseball Research
- Sound Recording History — Edouard-Leon Scott
- South African History Online
- South Carolina Encyclopedia
- South Tyrol Museum of Archaeology
- Southern Adventist University Library — Empires guide
- Sovereign Limits — Egypt–Sudan Land Boundary
- Space Needle — About
- Space.com
- Spaceline — Titan I Fact Sheet
- Spain Then and Now
- SPARK Museum of Electrical Invention — The First Transcontinental Telephone
- SPIE (International Society for Optics and Photonics)
- Sports Illustrated - The history of rackets
- Springfield College - Birthplace of Basketball
- Springfield Museums — Stegosaurus
- SRF (Swiss Radio and Television)
- SRI International
- SS Great Britain — Historic Mechanical Engineering Landmark
- ss Great Britain register entry
- St Albans Museums
- Stadt Hameln (official town of Hamelin) — The Pied Piper, an Unsolved Mystery
- Standing Their Ground: The Sit-In at the Greensboro Woolworth's Store
- Stanford Digital Repository — The Mexico Earthquake of September 1985, A Preliminary Report
- Stanford Encyclopedia of Philosophy
- Stanford Magazine
- Stanford Medicine, Institute for Stem Cell Biology and Regenerative Medicine
- Star Walk — Belka and Strelka: The First Space Dogs Who Made It Back Alive
- State Historical Society of Missouri
- State Library of New South Wales — Arrival
- State Museum of the History of St Petersburg — Peter and Paul Fortress
- Statistics Canada
- Statue of Liberty–Ellis Island Foundation — Liberty Arrives in NYC
- Stichting Grenspalen (Dutch border-marker heritage foundation)
- Stille Nacht / Silent Night Museum — Oberndorf
- StratoCat — America's First Flight: Blanchard's balloon voyage
- StudioBinder
- Suez Canal Authority — Canal History
- Sulfur, Chlorine, and Fluorine Degassing by the 1783-1784 AD Laki (Skaftar Fires) Eruption in Iceland, NASA Technical Reports Server
- supermagnete: Curie temperature
- Surrey NanoSystems and University of Surrey partner to combat satellite reflectivity — University of Surrey
- Swarthmore College, Global Nonviolent Action Database
- Swiss Seismological Service
- Switzerland Cheese Marketing
- Symbolics.com, the first .com domain name
- Symmetry
- Syracuse University College of Arts & Sciences — The First Predicted Eclipse
- Tajik National University: 9 September - Independence Day of the Republic of Tajikistan
- Tate — All about Cubism
- Tchaikovsky Research
- Te Papa: Eyes of the colossal squid
- Teachers College, Columbia University — Gottesman Libraries blog
- Teaching American History
- Tees Valley Museums
- Telecommunications History Group
- TeleGeography
- Television Academy
- Television Academy — Leave It to Beaver
- Tennessee State Museum
- Tennessee Virtual Archive (TeVA) — The Scopes Trial
- Tennessee's Evolution Two-Step, American Civil Liberties Union
- Tesla Science Center at Wardenclyffe — Birth of Nikola Tesla
- Texas General Land Office, Save Texas History
- Texas State Library and Archives Commission
- The 14th Dalai Lama — Birth to Exile (Office of His Holiness)
- The American Ceramic Society
- The American Presidency Project — Message on the Completion of the Empire State Building
- The Art Newspaper
- The Association of Religion Data Archives
- The Battlefields Trust
- The Beatles — Abbey Road (official site)
- The birth of the Eiffel Tower — Official Eiffel Tower Website
- The British Library — Mary Shelley's Frankenstein
- The British Museum — The Rosetta Stone: everything you need to know
- The Contemporary Jewish Museum - Project 304805
- The Conversation (Julie Loisel, Texas A&M University)
- The Cromwell Association
- The Crowninshield Elephant
- The day polio met its match — Salk Institute for Biological Studies
- The Death Penalty Project
- The Discovery of Brazil, Encyclopaedia of Portuguese Expansion
- The Dudley Women
- The Edison of 1879 — POWER Magazine
- The First Amendment Encyclopedia
- The First Class of the World Video Game Hall of Fame
- The First Episode of Saturday Night Live — NBC Insider
- The first Oktoberfest — Deutschlandmuseum
- The Franklin Institute
- The Freedom Trail — Boston Latin School Site
- The Friends of Charles Darwin — Darwin Goes Public
- The Fryderyk Chopin Institute
- The Gazette (official UK public record)
- The Geneva Conventions: 160 years of history — International Geneva (Geneva government portal)
- The Geography of Transport Systems (Hofstra University)
- The George C. Marshall Foundation
- The Harvard Crimson — Hundreds Register for New Facebook Website (Feb. 9, 2004)
- The Henry Ford
- The Henry Ford - The First Indianapolis 500, 1911
- The History of Parliament
- The History of the Oktoberfest in Munich — muenchen.de (official city portal)
- The Hitchhiker's Guide to the Galaxy book series — Pan Macmillan
- The Hollywood Reporter
- The International Anthony Burgess Foundation
- The Keeling Curve — History (Scripps Institution of Oceanography)
- The Kiribati Independence Order 1979
- The Kyoto Protocol
- The Language of Food (Dan Jurafsky, Stanford University)
- The Latin Library
- The LEGO Group
- The Linnean Society — Naming Nature
- The London Archives
- The Magnus Effect and the FIFA World Cup Match Ball - COMSOL
- The Maracanazo: When Uruguay Silenced Brazil in the 1950 World Cup Final - beIN Sports
- The Mariners' Museum — Ages of Exploration: Pedro Álvares Cabral
- The Marius Petipa Society
- The Metropolitan Museum of Art — Leonardo da Vinci (1452–1519)
- The Mob Museum — St. Valentine's Day Massacre Wall
- The Monument — History
- The Morgan Library & Museum
- The Museum of Contemporary Art, Los Angeles
- The Museum of Flight
- The Napoleon Series — Constitution of the Year XII (primary document)
- The Nation — May 25, 1977: 'Star Wars' Opens in Theaters
- The National Archives (UK)
- The National Gallery, London (via Google Arts & Culture)
- The National WWII Museum
- The Nature Conservancy — What to Know About Periodical Cicadas
- The New York Review of Books
- The Nobel Peace Prize — Alfred Nobel's Will
- The Nobel Prize
- The Open University — Getting started on Ancient Greek
- The Orwell Foundation
- The path to devolution — Scottish Parliament
- The Planetary Society
- The Presidency, Republic of South Africa — Mahatma Gandhi (1869–1948)
- The Prime Pages
- The Ricardian Theory of Comparative Advantage
- The Roberta Bondar Foundation — On This Day, January 6
- The Rockettes (Radio City Music Hall)
- The Royal Household, Elizabeth I
- The Royal Institution
- The Royal Parks — The Great Exhibition of 1851 in Hyde Park
- The Royal Society — History of Philosophical Transactions
- The Saturday Evening Post ("In a Word")
- The Scopes Trial, Tennessee Encyclopedia
- The Shrine of Baha'u'llah — official Baha'i site
- The Siege of Sarajevo — University of Maryland (Bosnian Genocide exhibit)
- The Stolen Bucket — Palazzo Comunale di Modena
- The Tabernacle Choir — The History of the 'Hallelujah' Chorus from Handel's Messiah
- The Tank Museum — Tanks at Flers
- The Tetris Company celebrates game's 40th birthday
- The Third Flag Act — Flag Day Monument
- The Three Forms of Carbon (U. of Michigan Materials Science)
- The Trial of Warren Hastings - European History Online (EGO), Leibniz Institute of European History
- The Tudor Society
- The Viking Ship Museum, Roskilde
- The Walkman Archive — Sony TPS-L2
- The Walt Disney Company
- The Walt Disney Family Museum — Snow White and the Seven Dwarfs
- The Westport Library
- The White House (Obama administration archive)
- The World of the Habsburgs — The declaration of war
- TheCollector — Bir Tawil: The Unclaimed Land That No One Wants
- Think American Foundation — Washington's First Thanksgiving Proclamation
- Thirty-five years later, the Baltic Way still inspires the fight for freedom
- This Day in Aviation — 3 February 1959
- This day in space history: Mariner 9 — Space Center Houston
- Thomas A. Edison Papers, Rutgers University
- Timeline (Reserve Bank of Australia Museum)
- Times Square — The History of New Year's Eve & the Times Square Ball
- Titanic Belfast
- Today in Connecticut History
- Today in Georgia History — Georgia Ratifies the U.S. Constitution
- Today's Flashback — William Austin Burt patents 'typographer' (typewriter)
- Tokyo Metropolitan Government
- TRANSCEND Media Service — Mahatma Gandhi (2 Oct 1869 – 30 Jan 1948)
- Transport for Wales
- Transportation History
- TravelChinaGuide — Discovery of Terracotta Army in 1974
- Treaty of Fontainebleau, April 11, 1814 — official text
- Trinity College Library, Cambridge
- Trust for the National Mall
- Tufts University Department of Chemistry
- Turkish Museums
- Turner Classic Movies (TCM)
- TV Insider
- Tynwald - Parliament of the Isle of Man
- U.S. Army — Vietnam War 50th Year Commemoration
- U.S. Bureau of Reclamation
- U.S. Capitol Visitor Center — Greenbacks (United States notes) issued March 10, 1862
- U.S. Census Bureau — Herman Hollerith and Mechanical Tabulation
- U.S. Courts — Facts and Case Summary: Miranda v. Arizona
- U.S. Department of Energy
- U.S. Department of Energy (OSTI)
- U.S. Department of Energy, Office of Science
- U.S. Department of State
- U.S. Department of State, Office of the Historian
- U.S. Department of State, Office of the Historian: Tajikistan
- U.S. Department of the Interior — 13 Facts About Bats
- U.S. Energy Information Administration — Measuring electricity
- U.S. EPA, Exxon Valdez Spill Profile
- U.S. Federal Reserve - FEDS Notes
- U.S. Geological Survey
- U.S. Geological Survey — M9.2 Alaska Earthquake and Tsunami of March 27, 1964
- U.S. Geological Survey — The Severity of an Earthquake
- U.S. Government Accountability Office
- U.S. Government Publishing Office — Ben's Guide: The American Flag
- U.S. House of Representatives — History, Art & Archives
- U.S. National Archives
- U.S. National Archives
- U.S. National Archives — The War of the Worlds Broadcast, 1938
- U.S. National Library of Medicine - Visible Proofs
- U.S. National Library of Medicine — Circulating Now (NIH)
- U.S. National Park Service — Super Volcanoes
- U.S. National Science Foundation
- U.S. Naval Observatory — U.S. Time Zones FAQ
- U.S. Olympic & Paralympic Museum
- U.S. Postal Facts — Benjamin Franklin, first postmaster general
- U.S. Securities and Exchange Commission - Investor.gov
- U.S. Tornadoes — May 3-4, 1999 Tornado Outbreak and the Bridge Creek-Moore F5
- UAE Embassy in Washington, DC
- UC Berkeley Library — What happened to Van Gogh's ear
- UC Berkeley Museum of Paleontology — Avians
- UC Berkeley News
- UC Berkeley Seismology Lab — The 1906 Earthquake
- UC Riverside — Department of Mathematics (Physics FAQ)
- UC Santa Barbara Department of Geography
- UCAR High Altitude Observatory — Galileo Galilei (1564–1642)
- UCLA (Leonard Kleinrock Center)
- UCLA Arthur Ashe Legacy
- UCLA Center for India and South Asia
- UCO/Lick Observatory — 1884 International Meridian Conference proceedings
- UCSF Brain Tumor Center
- uDiscover Music: A Day That Changed The Course of History
- UK Government History of Government blog
- UK Parliament (Hansard)
- UK Parliament (Hansard)
- UK-St Helena Heritage Trust
- UN International Criminal Tribunal for the former Yugoslavia — The Conflicts
- UN News (United Nations)
- UN Treaty Collection — Articles of Agreement of the IMF
- Understanding Evolution, University of California, Berkeley
- UNESCO
- UNESCO Intangible Cultural Heritage
- UNESCO World Heritage Centre
- UNFPA, State of World Population 2023
- Union Carbide India Ltd, Bhopal — UK Health and Safety Executive case study
- Union des Maisons de Champagne
- Union Pacific Railroad Museum — Standard Time
- United Nations
- United Nations
- United States Botanic Garden — Titan Arum
- United States Holocaust Memorial Museum
- United States Holocaust Memorial Museum — Invasion of the Soviet Union, June 1941
- United States Military Academy
- United States Naval Academy
- United States Postal Inspection Service — Colonial Period
- United States Postal Service
- Universal Declaration of Human Rights (1948)
- Universidad Nacional Mayor de San Marcos — Historia UNMSM
- Université PSL
- University College London (UCL)
- University College, University of Oxford — 1984
- University of Alabama
- University of Alaska Fairbanks Geophysical Institute — Alaska Science Forum
- University of Arkansas, Walton College — Arkansas Business Hall of Fame: Sam M. Walton
- University of Birmingham
- University of California Agriculture and Natural Resources
- University of Cambridge — Naked Mole-Rats: are these rodents immune to cancer?
- University of Cambridge (Quentin Stafford-Fraser)
- University of Chicago
- University of Chicago Magazine
- University of Chicago News
- University of Connecticut — Periodical Cicada Information Pages
- University of Groningen
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- University of New South Wales — School of Physics (Music Acoustics)
- University of Nottingham — Julian/Gregorian Calendars
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- University of Sussex
- University of Tsukuba — Dr. KANO Jigoro, The Pioneer of Judo
- University of Tubingen — Hohle Fels
- University of Utah Genetic Science Learning Center
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- USDA Economic Research Service
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- Utah Division of State History
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- Vermont Public — The most influential Vermont inventor you've never heard of
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- Vodafone
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- VW Beetle, the real miracle — Volkswagen Newsroom
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- Walmart — Company History
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- Washington University in St. Louis — The Source
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- WebExhibits — Pigments Through the Ages: Ultramarine
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- West Virginia Public Broadcasting
- Western Australian Museum — Skylab model, Esperance Museum
- Westminster Abbey
- What are fulgurites? (Utah Geological Survey)
- WhatsOnStage
- Who hit the first 3-pointer in NBA history? - NBC Sports Boston
- Why Can't You Tickle Yourself?
- Why do Basketballs Bounce? - Physics Van, University of Illinois
- Wikimedia 15th Anniversary
- Wikipedia
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- Wyoming State Library
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