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TIL: Ancients measured long distances by hiring "bematists." They were trained to count steps while walking between locations and could measure hundreds of miles with 95%+ accuracy. Eratosthenes used one to calculate the circumference of the Earth within 15% in 240 B.C.E.

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wLXWM TIL a man worked at the restaurant at the top of WTC. After 9/11, they never saw him again and presumed he died in the towers. In 2003, the government removed his name from the 9/11 memorial — he might have used the tragedy to start a new life without telling his family.
ra5e TIL that a German U-boat sunk in 1945 was raised in 1957 and returned to service.
Rjp1 TIL Roger Ebert refused to give “The Human Centipede” a star rating, stating that it was unsuited for the film and that whether it was good or bad didn’t matter.
OK66 TIL: Mt. Everest came out to exactly 29,000 feet, but they made it 29,002 because they thought people wouldn’t believe the actual number was real and would assume it was rounded.
8ey8X TIL: Squirrels gather nuts and seeds during the fall and bury them in the ground or hide them in their nests over a large area (scatterhoarding), and often forget them, resulting in new trees (mutualism). In winter, they eat them after finding the buried nuts.