Inventions, firsts, and turning points tied to today’s date — each one sourced and dated.
A prime minister walking home from the cinema without bodyguards was gunned down, launching a case that baffled Sweden for decades.
On a single Saturday morning in Cambridge, two scientists worked out the twisted-ladder shape that encodes all life.
A half-ounce of polymer pulled from coal-derived chemicals launched the age of synthetic fibers — and, soon after, nylon stockings.
