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TIL That until 2022, the Japanese Public School System forced schoolgirls in Japan were forced to wear specific colours of underwear and were forced to have dyed black hair in school.

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R7y54 TIL the inventor of the U-bar bike lock and founder of Kryptonite, Stanley Kaplan, was bought out by his business partner Michael Zane, who proceeded to remove Kaplan from company history and claim that he had invented the lock.
yVdMe TIL: about Drag hunting, it is conducted in a similar manner to fox hunting, with a field of mounted riders following a pack of foxhounds. The primary difference is the hounds are trained to hunt a prepared scent trail laid by dragging a material soaked in aniseed or another strong smelling scent.
9raM TIL it’s possible to find DNA on a cigarette butt in the street, sequence it, and 3D print a very accurate face from it.
d8xnK TIL that a 1969 treasure hunt movie (originally called "Caine") changed its name to "Shark!" after a stuntman was tragically killed by a shark during production and the advertising used the stuntman's death as a means to help promote the film.
BBLL TIL Ancient Egyptians are credited with having the first idea of air condition, where they hung reeds from windows, and moistened them with trickling water. The evaporation of the water brought cool air in through the window.