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TIL of Loulis, a chimp who learned to communicate trought sign languange, but he wasn't taught by humans: he learned the signs from his adoptive mother, Washoe, the first chimp to ever learn sign languange

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xV80D TIL that gays in Hong Kong started using the word "comrade" (同志) in the '80s as a way to spite the Chinese Communist Party for its mistreatment of sexual minorities in the mainland. Today, it is one of the primary terms LGBT people in the Chinese-speaking world use to refer to one another.
kJYL7 TIL Mr. Snuffleupagus from 'Sesame Street' was originally a friend of Big Bird's that everyone else thought was imaginary, and it was decided that he should be seen by other people to encourage children to talk about any abuse they might have suffered.
0dGBR TIL why do mirrors reverse left and right, but not top and bottom? The mirror does not reflect left to right or top to bottom, but it does reflect backwards. In other words, it is reversed, but inverted into the third dimension, like a glove is turned inside out.
mjpO TIL that Bill Shepherd, first US Navy SEAL that became a NASA Astronaut and first commander of the ISS, was asked what he does best in his astronaut candidate interview. He answered: “Kill people with a knife”
R7pM6 TIL: The National Institute on Drug Abuse inadvertently led to the discovery of the Endocannabinoid System (ECS) trying to prove the dangers of marijuana. ECS serves a vital purpose for our health and well-being because it regulates key aspects of our biology. It explains why pot works medicinally.