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TIL a German company made orchestral instruments from Perspex in the 1930s. The string instruments were too quiet for orchestras, but the flutes and clarinets were just as good as their metal or wooden equivalents.

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Nn8b TIL the last Australian Aboriginal nomads first made contact with white people in 1984. That year they came out of the desert and continue to live in modern society. One of them is quoted as saying ‘I wouldn’t go back.’
VQnZ TIL South Africa has one of the largest impact craters on Earth. It is called the Vredefort Dome and is about 160 km in diameter.
16wGD TIL that, at least in Britain, many beers are produced using isinglass (dried fish swim bladders) as a method of clarification and are not strictly vegetarian
mZjo TIL 2,000 year-old seeds were discovered in Israel around 1965 to be held in storage for the next 40 years. After they were planted, a tree that has been extinct for 1,800 years sprouted.
nedYr TIL that manatees rely on their farting abilities to keep them afloat. When they have gas stored up, they’re more buoyant and float to the surface. When they fart out that gas, they sink. When constipated and can’t pass gas, they can't swim properly and float around with their tail above their head.