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TIL The first stenotype machine (the machine used by court reporters to type shorthand) was invented in 1830.

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DQvVp TIL Henry Heimlich (who gave his name to the manoeuvre) advocated Malariotherapy; the deliberate infection of a person with benign malaria to treat ailments such as cancer, Lyme disease and HIV. The Centers for Disease Control and Prevention consider the practice "atrocious".
awJRL TIL that the drink mix Tang wasn't created by or for NASA. It was introduced in 1957 but sold poorly until the U.S. space agency used it for John Glenn's 1962 Mercury mission. Tang was then marketed as what the astronauts drank, but Apollo 11 astronaut Buzz Aldrin later said, "Tang sucks."
RBXj TIL that a QR code on a Heinz ketchup bottle once took people to a porn site.
ZXVY TIL the reason many U.S army helicopters are named after native-American tribes is because the first U.S air force bases were located on native reserves.
wLoe8 Everybody knows not to shine laser pointers in your eye. They could damage your vision! (Emphasis on could, since your eye’s blink reflex would probably protect your retina.) But what if you were an evil villain determined to make a death ray? How many laser pointers would it take to create a deadly weapon?