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TIL about John Howard Griffin, who is best known for his project to temporarily pass as a black man and journey through the Deep South of 1959 to see life and segregation from the other side of the color line.

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6E8AW TIL how Native Americans could easily take down the mighty buffalo. The buffalo’s lungs share the same compartment (unlike humans who have two separate compartments). So when an arrow/spear pierces the Buffalo’s lung cavity (pleura), both lungs collapse, bringing the buffalo down swiftly.
8aELb TIL The shrine buildings at Ise, Shinto’s holiest site, are torn down & rebuilt every 20yrs in line with the belief in the impermanence of all things & as a way to pass building techniques across generations. The buildings have existed for ~1300yrs; the 63rd rebuilding occurs in 2033.
Brj4d TIL: When model/actress Brooke Shields was 10, photographer Garry Gross, with her mom's consent, took nude photos of her in a bathtub wearing adult makeup and covered in oil, and rights to said photos were contested in court.
X0VKX TIL On May 7th, 1952, Geoffrey W.A. Dummer first published the concept of the integrated circuit. This breakthrough allowed complex electronic circuits to be built on a single chip, becoming the foundation for modern computers, smartphones, laptops, and countless other electronic devices.
lNbG TIL a NASA physician recommended that crew members aboard Skylab masturbate while in space to help with infected prostate glands.