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TIL that the practice of worker's compensation has its origins in 18th century piracy. A system of compensation was established as a result of the occupation's high risk of injury and included payments for different types of injuries as well as giving crewmates less strenuous duties when injured.

KLJ TIL the Coriolis Effect can be visualized on a merry-go-round aka roundabout, by throwing a ball to a fellow rider directly across from you. To him it will appear to curve opposite of the way you are spinning, although to a viewer not on the merry-go-round it appears to fly straight.
b6Zn0 TIL: the term is milquetoast (timid, weak, unassertive), not milk toast. It originates from the 1924 comic strip character Caspar Milquetoast. However, the origin is that he's named after a "weak", bland dish of...milk toast (buttered toast served in a shallow bowl of warm milk).
WkJ08 TIL about Francisco Boix who not only survived Mauthausen concentration camp. He also managed to save thousands of negatives that would later be used as photographic evidence documenting the atrocities. He even helped convict nazis at the Nuremberg trials using his evidence.
woj5J TIL in 1963 the FBI investigated five teenagers from Portland who called their band "The Kingsman" and had recorded "Louie Louie" because J. Edgar Hoover believed the song was salacious and was corrupting the nation's youth.
9YnQ6 TIL Jackie Chan’s Dad Was a Spy Who Met His Opium-Dealing Mom During an Arrest