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TIL Archaeologists found the other half of the Mayan calendar in May

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AKOx TIL that in 1916, Nikola Tesla invented a unidirectional flow valve with no moving parts, by making the flowing substance resist its own movement.
jN69n TIL we call letters "uppercase" and "lowercase" because the original printing presses kept letter blocks in literal cases; since small letters were used more often, they kept them in the bottom case for easy access; thus, lowercase (and uppercase) were born.
P141E TIL that they gave Molly (MDMA/ecstacy) to octopuses in the name of science. Known for being anti-social, this made them more social.
W75eB TIL one of the biggest drug busts in the world was in Sylmar, CA. 20 tons of cocaine, worth $6 billion and about 5% of the world’s annual production, was left unguarded and secured with a $6 padlock.
Bragr TIL The 1904 Olympic Marathon included a runner who was poisoned by his trainers, a runner who was chased a mile off-course by dogs and a runner who ate rotten apples, had to lie down for a bit and still finished fourth.