Inventions, firsts, and turning points tied to today’s date — each one sourced and dated.
A shipboard fire detonated 2,300 tons of fertilizer, leveling a Texas port in the deadliest industrial accident in US history.
On April 16, 1943, a Swiss chemist absorbed a trace of his own compound and became the first person to feel LSD.
On April 16, 1705, Queen Anne dubbed Isaac Newton a knight at Trinity College — though politics, not physics, drove the honor.
