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TIL The earth is so large that it would take 32 hours to free fall to the core.

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XRJD TIL H. G. Wells created a tabletop-esque war game, in 1913, called “Little Wars; a game for boys from twelve years of age to one hundred and fifty and for that more intelligent sort of girl who likes boys’ games and books.” which can be read and downloaded via Project Gutenberg.
64pJ TIL that the word “yolk” is derived from an Old English word that means “yellow.” So egg white and egg yellow.
mYnY TIL that in 1974, an artist allowed her audience to use 72 objects (ranging from a feather to a loaded gun) on her however they wanted and she wouldn’t react for 6 hours. The audience became aggressive, and when the six hours were up, everyone ran away to avoid confrontation.
bODa TIL there exists a network of USB drives embedded in cement all over the world designed to be dead drops for files.
Y7X0r TIL the spikes on a stegosaurus were named after a Gary Larson comic