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TIL that the creator of the floppy disk, Yoshiro Nakamatsu, would routinely almost drown himself in order to spur creativity.

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wo6mW TIL in 1854, Dr. Jules Baillarger depicted a mental illness expressed by switches between mania and depression. He named it dual-form insanity. Dr. Jean Falret described the same illness but named it circular insanity. They spent their lives disputing who first conceptualized it.
YDWx TIL “microbeads” used in exfoliating soaps are actually made of plastic (and they are a major pollution problem)
gMpO4 TIL scientists managed to recreate the voice of a 3000-year-old mummified Egyptian priest. They produced a 3D-printed voice box based on a precise scan of his vocal tract, and then used the vocal tract with an artificial larynx sound, synthesising a vowel-like sound reminiscent of a sheep's bleat
x66d5 TIL The seahorse is the only case of male pregnancy in the animal world
ADDXl TIL the last hanging in the US was in Delaware in 1996