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TIL In 1747, James Lind conducted what is considered the first controlled clinical trial aboard a ship to treat scurvy. In addition to lemons, he tested cider, vitriol, seawater, spices, and vinegar as other treatment arms.

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ANDDd TIL of Mike McGear, real name Mike McCartney, the younger brother of Sir Paul McCartney who set out on his own musical career four years after the Beatles' first hit
5YByk TIL that early Americans, specifically the author of the American Dictionary, removed letters they deemed unnecessary (color/colour, neighbor/neighbour) to save money in print publications
rOG0 TIL that while under the influence of catnip, the effects the cat is experiencing are similar to that of LSD on humans.
PY9ZO TIL that at birth Johnny Cash was named J. R. Cash. When he enlisted in the United States Air Force, he was not permitted to use initials as a first name, so he changed his name to John R. Cash. In 1955, after signing with Sun Records, he started going by Johnny Cash.
AD7Nw TIL of Project 100000, a recruitment effort during Vietnam that brought in mentally and physically unfit people for service to fill the ranks. Many brought in had a 5th grade level education and were considered mentally challenged.