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TIL that men had to fight for the right to be topless, as men's nipples were taboo like women's, and were only given the legal freedom to display their nipples in public in 1936.

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Z8l0D TIL that in 1987 during the development of "Smooth Criminal" Dr. Eric Chevlen recorded Michael Jackson's heartbeat and digitally processed it through a Synclavier, which would become the heartbeat you hear at the beginning of the song.
4kLKN TIL : Hummingbirds are one of the few bird species who pee. Other birds excrete urine in solid form, but hummingbirds consume so much water through the nectar they drink that their urine is liquid.
x0k0 TIL Bats use sound to sabotage/jam rival bats’ sensors, so they can steal their prey (some also engage in fellatio).
xVAj7 TIL of the Great Flood of 1862, which created a 300 mile long sea in California's Central Valley
j4rE TIL a bacteria, Paracoccus denitrificans, not only survived in an ultracentrifuge with high speeds corresponding to 403,627 g, but actually had robust cellular growth. Hyperaccelerations like this are found on very massive stars and the shockwaves of super novas.