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TIL that late at night, when astronomer Harlow Shapley discovered our sun was not near the center of the Milky Way, he found the only other person in the building, a cleaning lady, and explained his discovery, and said that they were the only two people on Earth that understood it.

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XBo8 TIL: that Costco takes a loss of $40 million every year on their rotisserie chickens. By offering cheap hot-and-ready foods, as well as taking a loss on everyday items like milk, Costco exponentially increases foot traffic.
QJALp TIL Ketamine was given to boys trapped in a cave to keep them unconscious & to prevent them from panicking during their six day rescue
6ZO8 TIL Led Zeppelin was refused entry into Singapore because the band members had long hair
Yp7Wr TIL that adding salt on pineapples makes it sweeter. The salt reacts with the acids of the fruit, thus converting into a neutral compound and losing the sour taste. Because of this, the pineapple then becomes sweeter.
w6QM TIL you would have to smoke 680kg of marijuana in 15 minutes to die from an overdose