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TIL that In ancient China, Spanish Fly beetles were mixed with human excrement, arsenic, and wolfsbane to make the world's first recorded stink bomb

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JgrQ TIL that Jerry Lewis made a movie in 1972 where he plays a clown in a concentration camp, and leads kids on a train to a gas chamber. It has never seen the light of day.
b0m4 TIL I learned that only 5% of British police are authorised to use firearms. A 2006 survey of 47,328 Police Federation members found 82% did not want officers to be routinely armed on duty, despite almost half saying their lives had been “in serious jeopardy” during the previous three years.
epPQ5 TIL about Donald Harvey, a nurse who murdered 37 patients, was apprehended after a medical examiner with the genetic ability to detect cyanide performed an autopsy on one of his victims, leading to an investigation that uncovered Harvey's crimes.
e0AD4 TIL That Dungeons and Dragons' "Thieves' Cant" is a real thing - a language used by beggars and thieves in medieval Britain.
MxZ0 TIL When women synchronize mentrual cycles, the more socially outgoing or “dominant” woman’s cycle will make other women’s cycles conform to hers.