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TIL for millennia Autism and other sudden disabilities was explained by the Changeling folklore. A fairy or demon would steal a normal baby and replace them with their own child in disguise. The Changeling would cry, scream, not display social behavior, or just become completely unresponsive.

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oRx5R TIL that Rocky Marciano’s opponent Roland La Starza, had to get surgery for bones, muscles and nerves, just on his arms, after Marciano was done with him.
XEm8Q TIL - Deus ex machina (god from the machine) is a plot device whereby a seemingly unsolvable problem in a story is suddenly and abruptly resolved by an unexpected and seemingly unlikely occurrence. H.G. Wells used it in War of the Worlds to kill the Martians with bacteria.
9YmKX TIL that 1.6 million people are estimated to have attended Metallica's concert in Moscow in 1991.
epK1n TIL Aloe Vera contains a growth hormone, gibberellin, and a polysaccharide, glucomannan, that promote fibroblasts proliferation and collagen synthesis, making skin heal better. Additionally aloe vera has anti-inflammatory and antibacterial properties.
VMybZ TIL about the U.S. Air Force's doomsday weapon, SLAM. The rocket was designed to fly fast and low over the Soviet Union, dropping hydrogen bombs over predetermined targets while its unshielded nuclear reactor contaminated everything in it's path.