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TIL That spiral "Feather Death Crowns" can form in the pillows of the ill or dying, likely caused by fever sweat and thrashing. In Appalachia these "crowns" were commonly saved for posterity.

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6NLm TIL that in the days after 9/11 Walmart purchased all available stock of American flags gaining a monopoly on the market.
XggQ TIL In 2002, a man from Tacoma, WA was knocked unconscious in a mugging and woke up a mathematical genius
oBvPA TIL NASA developed a form of concrete that doesn't need water, to be used as a construction material on the Moon
WkRQo TIL that there are legless lizards. They look and move like snakes, but have distinct features that make it a lizard.
01Pp TIL That the Soviet Union, and now Russia, have a fail-deadly system which automatically launches a full scale nuclear attack in the event that authoritative command is incapacitated. It uses light, seismic, radioactive, and overpressure systems to activate the launch. It is still in use today.