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TIL about Twilight sleep, a procedure used for labor in the early 1900s. Women were drugged, restrained in a dark room with gauze on their eyes and ears plugged. The purpose of the drugs was to cause the women to forget the childbirth, not prevent pain, as they were still conscience the whole time.

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D1j1Y TIL the Star Trek theme tune is not just an instrumental but has lyrics (which were never intended to be recorded) in order to give the writer more money in royalties
wRyM TIL that in the 18th century John Harrison claimed that he could build a clock to keep time to within a second over 100 days; it triggered widespread ridicule at his time. The clock had been built to his exact specifications in 2015; it was declared the “most accurate mechanical clock”
kJg8E TIL at the luxurious French brothel One-Two-Two there were themed rooms. One of the rooms, the Orient Express was a replica of a train car. It had sound effects and shook and bounced like a real train in motion. You could even have an intrusive conductor barge into the room and join in.
BrPnW TIL in 1963 Italian engineers underestimated the effects of a controlled landslide they’d planned, resulting in a shockwave 2x the intensity of Hiroshima, instantly pulverizing thousands of people & causing a 820ft tsunami to travel down a mountain, turning the town beneath to a “large muddy crater”
R7pQ1 TIL that during a speech, the elderly former slave and abolitionist Sojourner Truth was accused by a man in the crowd of not being a female, to which she responded by exposing and shaking a withered breast at him and asked: "Want a suck?"