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TIL that Harry Truman was a KKK member for a short time in the 1920’s

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mxobP TIL about a "Rabbit Test", a now retired pregnancy test, in which urine from a human female would be injected into a female rabbit. The rabbit would later be dissected to annualize the effect on it's ovaries. "The rabbit died", used to be slang for getting pregnant.
dle7 TIL the man who first artificially cloned a fish was later forced to give up his research and become a janitor by the Chinese government during the Cultural Revolution.
N7eXJ TIL Down syndrome is practically non-existent in Iceland. Since introducing the screening tests back in the early 2000s, nearly 100% of women whose fetus tested positive ended up terminating the pregnancy. It has resulted in Iceland having one of the lowest rates of Down syndrome in the world.
7ry0b TIL famed dancer Josephine Baker was a spy during WW2 and had a pet cheetah.
gr1MX Today I learned many of the most popular pop songs, from the last 50 years use the same four cords.