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396

TIL The only creature on Earth who is not symmetrical in any way is the sponge.

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16A7d TIL: In the past, covering a yawn with one's hand was believed to protect against the devil or the loss of one's soul. The superstition likely originated from the idea that showing a yawn made one susceptible to spirits entering the wide-open mouth.
jNKeX TIL of the "The Norwegian Rocket Incident", when in 1995, Russian officials briefly misinterpreted a Norwegian scientific rocket to be a nuclear attack. It showed the dangers of accidental nuclear war even when the threat of military confrontation between the US and Russia was at an all-time low.
g9dL TIL the American government can classify your invention as “born secret” and keep it from the public
GyyQ TIL that Harvard earns enough money on interest from its endowment that it could offer free tuition to all students and still make profit on the interest.
ggGL TIL Harrison Ford had extensive knowledge of reptiles from his childhood participation in the Boy Scouts of America. This was jokingly reversed as a fear of snakes in his portrayal of Indiana Jones.