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TIL the pinkish-orangish slime that grows in showers and bathtubs is made by Serratia marcescens, a bacteria that can cause infections from pink eye to meningitis.

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oe88 TIL that the trajectory of the first American manned spaceflight was calculated by an African-American woman. She was so good at computations that she was asked to check the work of the computers when they were first used by NASA to calculate John Glenn’s flight path.
YpXYB TIL In 1970, the agency running the new public television network in Mississippi initially voted to not show Sesame Street on the basis of the show being racially integrated. Public pressure when this was leaked forced them to reverse the decision.
yVkYJ TIL No more than two flies are allowed by law in any public toilet in Beijing, China. In 2012 Authorities in the Chinese capital set new standards for public toilets, including a stipulation that they should contain no more than two flies.
e0Rob TIL in 1848 entrepreneur James Lick arrived in San Francisco with 600 lbs of chocolate to sell. When all of his chocolate sold quickly, he urged his confectioner friend in Peru to come to San Francisco and start his own Chocolate company. That confectioner's name is Domingo Ghirardelli.
xVp00 TIL that "pink slime" is a meat by-product produced by heating and centrifuging beef trimmings. It is approved for limited human consumption in the United States but is banned for human consumption in the European Union.