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TIL the longest held copyright in the US is a diary written by John Adam in 1753 that remains protected until 2053.

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via reddit.com

gMkp8 TIL that the Life expectancy number we know for the middelages includes the infant mortality, so 13th-century English nobles had 30 year life expectancy at birth, but when they reached the age of 21, they would normaly have a expectancy of 64.
PO4G TIL during World War II, Polish doctors Stanislaw Matulewicz and Eugeniusz Lazowski infected Jews with a microbe Proteus OX19, which exhibits symptoms of typhus, which lead Nazi doctors to quarantine and stop deportations in fear of infecting Nazi troops, thus saving thousands of lives.
MeGkW TIL that during Rock Springs Massacre in 1885 a mob of white coal miners in Wyoming attacked Chinese miners, many of whom they burned alive. Others were “scalped, mutilated, branded, decapitated, dismembered, and hanged,” killing at least 28. Sixteen men were arrested, but none were indicted.
R78Mw TIL that the man who created the carolina reaper pepper was actually trying to cure cancer.
OoYR TIL: If you have a problem with coyotes or wild dogs on your farm you can solve your problem and protect your pasture by adding a “Guard Donkey”.