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TIL James Derham was a black man who worked as an assistant under several doctors who owned him in the 1700s. He learned about medicine from them which lead him to open his own practice after he was freed. He was the first African-American to practice medicine in the U.S.

J8K1 TIL That legendary lover Casanova enacted revenge on a Soho courtesan who spurned him by teaching a parrot to say “Miss Charpillon is more of a whore than her mother” and putting it on sale at the Royal Exchange in the City.
WjWB TIL that the non-profit Susan G. Komen for the Cure has sued several other, often small defenseless, nonprofits for using the words “for the cure” or the color pink.
R7ZLQ TIL that we measure angles out of 360 degrees because the Sumerians divided the circular path of the sun in the sky into 360 degrees to track the sun's daily position, it took about 360 days for the sun to complete a full circuit across the sky. This all happened approximately 2400 BC.
yV8ZV TIL Up to the First World War bear's grease was sold as a baldness cure and beauty product. The demand outstripped the supply so unscrupulous dealers would actually sell other animal fats, with some going as far as dressing a dead pig as a bear.
8aO9K TIL "Oviparous" refers to egg-laying animals, and "viviparous" refers to animals that give birth to live young. "Ovoviviparous" refers to a hybrid-style where eggs remain inside the mother where they hatch internally and babies come out alive.