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TIL Muhammad Ali stopped a man from trying to kill himself (by jumping off a building) and he was originally named in honor of a white abolitionist.

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7rpYr TIL One of America's first patent trolls was George Selden, who was granted a U.S. patent for an automobile in 1895, and proceeded to sue anyone else who attempted to produce one even while he never manufactured a car himself.
0d6Jv TIL that a "frown" means something different to many people around the world. Some people believe it is primarily an expression of the eyebrows, while many others associate it with a downturned mouth.
x0J5 TIL China is the birthplace of the seismograph. Built in 132 AD, it consisted of 8 metal dragons holding 8 carved balls over 8 frogs. If an earthquake made the ground vibrate, the dragon facing the quake’s source would drop a ball into the mouth of its corresponding frog.
wLr6o TIL A band called The Warlocks were set to play a benefit concert in San Francisco in December 1965, but the problem was that there was already a band called The Warlocks...so they changed their name to The Grateful Dead.
NBy1 TIL that the first vending machine – a device that dispensed holy water in exchange for a coin – was invented in the first century A.D.