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TIL Humans are bioluminescent. Our visible light is 1000 times weaker than what our naked eye can detect. However, images of this glow have been captured by Masaki Kobayashi of Tohoku Institute of Technology, using a specialized sensitive camera.

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7mBx TIL a teacher in Queens resigned after an investigation revealed he’d used 11 sick days to compete in professional wrestling matches, once on a televised “SmackDown!” match against Kurt Angle.
nepaP TIL, 5 exabytes of information was created between 12k BC and 2003 AD. But that rate has gone up to every two days by 2003. An exabyte is 1,024 petabytes, while a petabyte is 1,024 terabytes.
5Yllp TIL that Lee Richmond, the first Major League pitcher to throw a perfect game (in 1880) once had a physics professor explain to him that a curveball couldn't exist, and it was only an optical illusion. In response to this, Richmond invited the entire faculty to watch him pitch.
b6J0E TIL that Starbucks incurred massive losses and failed miserably trying to expand into Australia.
e0Krg TIL that honeybees let out a ‘whoop’ when they bump into each other. This vibrational pulse, long thought to be a signal to other bees to stop what they are doing, might actually be an expression of surprise