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TIL Under Genghis Khan, the Mongols would catapult the dead bodies of soldiers infected by the bubonic plague over city walls during sieges. This is one of the earliest accounts biological warfare.

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a89LJ TIL A contaminated rooftop air-conditioning unit at the Opera House Hotel in the Bronx caused the biggest outbreak of Legionnaires' disease in New York, where 12 people died
69oY7 TIL Dave Pickton, the brother of serial killer Robert Pickton started a foundation in Ghana to help the poor in Africa
PvYn TIL O.J. Simpson earned $3,000,000 just from signing autographs while in prison.
XVDr TIL that humans are the only living great ape species who have 23 pairs of chromosomes, all other species have 24 pairs.
Ymav TIL in 2006 an Australian man tried to sell New Zealand on Ebay. The starting price was $0.01AU and managed to reach $3000 before Ebay closed the auction.