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TIL That Ancient Romans Used Urine for Teeth Whitening and Laundry

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M71Km TIL of the Yuen Long attack, where hundreds of suspected Triad members, in order to "counter protest" against pro-democracy hong-kong protesters, took to the streets, beating anyone indiscriminately with metal poles and wooden canes.
b9V0Z TIL that there was a Confederate Army brigadier general with the given name "States Rights"
PaQg TIL There is a 91 year old woman in Japan who paints every day, scans her images and upkeeps her art blog all by herself.
7roBx TIL that originally (up until 1804) electors could cast two votes for two different U.S. candidates for President, and the first runner-up presidential candidate became Vice President to guard against electoral gamesmanship.
R79J9 TIL Computer hacker Kevin Mitnick was forced to spend 8 months of his prison sentence in solitary confinement because officials believed he could use a payphone to start nuclear war by whistling to NORAD modems.