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TIL that John Rockefeller hired the national guard to massacre striking coal mine workers killing women and children in result

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wowyo TIL early 20th century pregnancy tests involved a lengthy and costly process where the urine sample would be injected into five mice per woman. The mice would then be dissected to find out if they were ovulating. These results would be obtained in a week.
pbY4 TIL That 80% of Lightning Strike Victims are Male
yVAZe TIL Bolivia's Palacio de Sal Hotel, located at the edge of the world's largest salt flat (Salar de Uyuni), is constructed entirely of salt. The floor, walls, ceiling, beds, tables, chairs, and sculptures are all made of salt. There is a rule prohibiting guests from licking the walls.
kxjB TIL Roald Dahl was a decorated WWII pilot, a post-war MI6 agent in the US, co-inventor of an implantable valve to relieve pressure in sufferers of hydrocephalus, and married a movie star.
dMwQ TIL that Teddy Roosevelt once held the World Record for most hands shaken in one day, with 8510 at a White House Reception.