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TIL tapeworms can give humans cancer

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AQg7 TIL in 1983 a man climbed the North Tower of the World Trade Center…to “call attention to the inability to rescue trapped occupants from the upper levels of skyscrapers.”
m18Ev TIL Kinkos got its name from its Lebanese founder's nickname, because he had "kinky hair"
OGZga TIL a Penn and Teller game went unreleased because the developer went bankrupt by overproducing copies of a Goofy game.
x6Vj1 TIL Reyn Guyer is a game designer whose first hit was Twister. In 1969, he invented "the world's first indoor ball". It was made of polyurethane and named after the foam used by off-roaders to cover their roll-bars: Nerf.
0ddGN TIL that the Feeling of "impending doom" is an official symptom of a Wrong blood type Transfusion. (ABO incompatibility)