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TIL during the Jim Crow era in the U.S., the turban was used by people of color for "confounding the color lines"—in other words, if you could pass yourself off as something other than black, you might circumvent some amount of discrimination.

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M70pK TIL obelisking - a handstand-like position that some dragonflies and damselflies assume to prevent overheating on sunny days
P11JO TIL Tarzan was not raised by gorillas, but rather a fictional manlike ape species called Mangani with their own language. According to one book, they beat on earthen drums during ritualistic dances.
R7YE9 TIL That The House of the Rising Sun also rhymes in Old French
Ak5g TIL George Lucas gave a speech in 1988 to Congress about the need to protect films from being altered. “People who alter or destroy works of art and our cultural heritage for profit or as an exercise of power are barbarians.”
5YpR TIL on this day in 1977 (15/08/1977) a signal was received on the Big Ear Telescope in Ohio that is thought to be from outside our Solar System. No signal of this type has been received before or since this.