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TIL that if you collapse an underwater bubble with a soundwave, light is produced, and nobody knows why.

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ADw6B TIL that in 2013, a truck hauling Cobalt-60, a radioactive isotope of cobalt often used in cancer treatment, was hijacked by thieves who were unaware of the truck's contents. The truck was found abandoned 2 days later in a cornfield near Mexico City, with the cobalt outside of its protective casing.
wOgP TIL A man foreclosed on a Bank of America branch after his house was wrongly foreclosed. He showed up with moving trucks and the local sheriff and told them to take everything out of the bank.
4Xgwo TIL that Romans weaved asbestos fibers into a cloth-like material that was then sewn into tablecloths and napkins. These cloths were cleaned by throwing them into a blistering fire, from which they came out unharmed and whiter than when they went in.
woJvY TIL of the Comuta-Car, an electric vehicle built in the 1970s that had a max speed of around 40 mph and a range of 40 miles (64 km). Starting in 1982, some kits may have been sold for people to build the cars at home.
JYyeQ TIL about "Roar," a 1981 comedy dubbed "the most dangerous movie ever made." Most of the crew was injured by untrained animals. Cinematographer Jan de Bont was scalped by a lion, and star Melanie Griffith received 50 stitches and nearly lost an eye. It cost $17 million but made only $2 million.