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TIL that 71% of Americans are “fairly certain” that Alexander Hamilton is among their nation’s past presidents. This confidence in Hamilton having been president is higher than for six actual presidents.

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EgGDp TIL isoamyl acetate is released by a honey bee's stinger where it serves as a pheromone beacon to attract other bees and provoke them to sting. It's also used as banana flavoring.
neV6B TIL in an 8-hour workday, the average worker is productive for 2 hours and 53 minutes.
PYabO TIL Napoleon Bonaparte was 5'7" which was an average male height in his lifetime. His supposed "shortness" was British propaganda that is still generally believed to this day.
6Eg9w TIL Nat sec advisor Brzezinski was woken at 3am by a call telling him Russia launched 250 ICBMs at the U. S. Minutes later, he received another call: The early-warning system actually showed 2,000 inbound missiles. As he began to phone the president, he received a third call: It was a false alarm.
PKML TIL that Beethoven wrote Moonlight sonata to a blind girl who wanted to know what was a moonlight like