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TIL rock art that was between 3,000 and 8,500 years old was destroyed by vandals in 2022 in Texas

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69478 TIL about the Ash Grove music club in Los Angeles. It was a mecca for blues and folk legends from 1958 to 1973. It influenced a generation of artists like Bob Dylan and Mick Jagger.
W70o9 TIL Graduate student Jocelyn Bell Burnell and her supervisor, Antony Hewish, built a radio telescope to observe quasars in 1967. Their discovery won the 1974 Nobel Prize – for Hewish. 50 years later, Burnell was awarded $3 Million in the Special Breakthrough Prize in Fundamental Physics
JEbB TIL that a room known as ‘Room 641A’ in the AT&T telecommunications backbone houses beamsplitters capable of monitoring all the internet traffic in the US. It was largely thought to be a myth until PRISM revealed its existence in 2007.
wond1 TIL that Pope Gregory IX issued a Papal Bull declaring that cats bore Satan’s spirit, which subsequently led to huge numbers of cats being killed throughout Europe producing an indirect cause of the Bubonic plague spread by fleas on rats, which would otherwise have been hunted by the dead cats.
epNlE TIL of Operation Yellow Ribbon - a plan implemented on 9/11 by Canadian Air Traffic Controllers to protect American targets by diverting potential threats to Canadian airspace.