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TIL that NASA built an elaborate escape route and bunker for Apollo engineers working on the launchpad, which had to take dozens of factors into account to withstand the absolutely massive explosion that would occur if the Saturn V exploded on the launchpad.

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pYnwb TIL about Peter Brough, a British ventriloquist with a hugely popular 1940s and 50s radio show. His radio success prompted a move to TV in 1956, which killed his career when his fans realised you could see his lips moving. A later critic wrote "Ventriloquism on the radio - I could have done that."
X0XDk TIL Low-background steel is steel produced prior to the detonation of the nuclear bombs. Typically sourced from old shipwrecks, it is often used for modern particle detectors because more modern steel is contaminated with traces of nuclear fallout
gMnw8 TIL that De Beers, the world's biggest diamonds company, started selling synthetic diamonds for the first time in its 130-year history. The manufacturing process has become so perfect that it has become difficult to tell the difference between synthetic and natural diamonds.
pYaQe TIL that cows form strong bonds and can become stressed when separated from their best friend 🥺
oBlr TIL The Great Lakes consist of only 4 bodies of water. Lake Michigan and Lake Huron are actually geographically and hydraulically a single lake, separated only by name. This actually makes it the world’s larges lake, as opposed to the popularly believed Lake Superior.