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TIL The phrase "mad as a hatter" originated in the hat making industry of the 18th century as mercury nitrate was a vital substance used in the production process. This lead to a variety of physical and mental ailments, including tremors (“hatter’s shakes”), speech problems, emotional instabilities.

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GAPxQ TIL that the fastest time to solve three Rubik’s Cubes while juggling them is 4 minutes and 31.01 seconds, achieved by Que Jianyu of China in 2018.
9YaeM TIL In response to the film "Apollo 18", NASA engineer John Schuessler clarified that moon landings ended with Apollo 17 because NASA simply did not have the time or funds to fit in more moon landings after 1972. He also sees no evidence of extraterrestrial life on the Moon
WkggY TIL That the Jim Varney character 'Ernest P Worrell' was originally used by an ad agency to sell everything from orange juice to air conditioners.
8eJ88 TIL about Anatoly Moskvin, who was arrested after 26 mummified bodies were discovered in the apartment he shared with his parents
wW1J TIL there is a conspiracy theory which claims The United States is a corporation, not a country.