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TIL "hermetically sealed" is named after Hermes Trismegistus who was into alchemy and supposedly found a way to make a glass tube air tight.

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A9V7 TIL the engine on the BMW M5 is so quiet the company plays fake engine noises through the speakers to “remind” drivers of their car’s performance
GPbj TIL China loosened it’s ‘One Child Policy’ in 2013, allowing couples to have two children if either parent is an only child.
P1Ew TIL Wikipedia has a page for every experiment seen in the Lilo and Stich canon, from 0 to 626
8ajE4 TIL the "Tarpeian Rock" is a cliff, some distance higher at 80 feet in Roman times, that was used by the Roman public to execute criminals and perceived traitors for over 300 years
PYD6n TIL that the 1st doctor to discover that doctors should wash their hands before performing surgery was ridiculed for suggesting that doctors were causing their own patients harm. He was ostracized and exiled from the medical community until his death.