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TIL the bacterium Desulforudis audaxviator lives in a complete absence of organic compounds, light and oxygen at temperatures of 60 degrees Celsius. It is the only species known to be alone in its ecosystem.

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JYDmm TIL on the sides of some Australian highways there are signs with trivia questions to keep drivers alert and focused on the road.
Zp4bD TIL that Otto Warmbier was an American college student who was imprisoned in North Korea in 2016 on a charge of subversion. In June 2017, he was released by North Korea in a vegetative state and died soon afterward. His family was awarded $240k in seized North Korean assets.
4KZX TIL dictator Robert Mugabe tried to stop a critic of Zimbabwe’s hyperinflation by levying ridiculous taxes on his newspaper; the writer retaliated with advertisements printed on trillion-dollar-bills, which was cheaper than actual paper.
oRMy7 TIL The largest Passover Seder in the world is held annually in Nepal
JY5ZQ TIL pulse oximeters are calibrated for white skin; the darker your skin, the more likely the pulse ox will overestimate your oxygen level