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TIL Deep-sea divers use a mix of 79% helium and 21% oxygen, making their voices squeeky. They need to use pitch control to understandably communicate.

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PDBG TIL Chelsea Peretti’s (Gina from Brooklyn Nine-Nine) brother founded Buzzfeed
7r1p TIL that ‘libra pondo’ a Latin phrase indicating weight is the reason pound is abbreviated as “lb”.
NXbXQ TIL: When falling in the standard belly-to-Earth position, an average estimate of terminal velocity for skydivers is 120 mph (200 km/h), and a falling person will reach terminal velocity after about 12 seconds, falling some 450 m (1,500 ft) in that time.
oBZ1K TIL that John Adams (successfully) defended the British Troops in their murder trial, sealing his reputation as one of the best lawyers in Massachusetts at age 35
7rlex TIL about Klepetan, a male stork who migrates from South Africa to Croatia every year for the last 15 years to be with Melena, a female stork who can't fly after being shot by a hunter. She lives indoors until his return and they stay in a nest on a roof until he leaves. They've had over 40 babies.