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TIL Splenda, the common household sweetener, was first discovered in 1976, when a scientist at a British college accidently misheard directions. He tasted a substance instead of testing it, and from then on the sweet taste of Splenda was discovered.

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EmPp TIL Axl Rose beat his girlfriend, Erin Everly, and hospitalized her on numerous occasions. He also, brought a gun when asking her to marriage threatening to kill himself if she had declined.
p8eKp TIL that while colored diamonds get their color from chemical impurities absorbing light- such as yellow diamonds containing nitrogen and blue diamonds containing boron- pink diamonds have no traces of impurities, thus baffling scientists and geologists as to how they have a pink color.
16ZZO TIL about Evangelista Torricelli, an Italian physicist and mathematician, and his groundbreaking creation of a vacuum. In 1643, he invented the barometer, an instrument used to measure atmospheric pressure that led to his famous observation that, "We live submerged at the bottom of an ocean of air."
M84a TIL that during a film sequence of Top Gun, an aircraft carrier captain changed the ships course and altered the lighting of a shot. Director tony Scott was told it would cost $25,000 to change its course. He quickly wrote a check, the course was reverted,and got 5 more minutes to get his shot.
Egb0 TIL that Liam Neeson used to be a school teacher and punched a student in the face for pulling a knife on him.