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TIL The song Greensleeves is from 1580 and while often said to refer to a promiscuous woman or prostitute whose clothing was stained green from having sex in the grass, it is more likely associated with green being the color of romance in that time period.

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4X6Lb Around 74,000 years ago, the Toba supervolcano erupted on the Indonesian island of Sumatra. It was the biggest volcanic eruption of the last 2 million years, unleashing 2,800 cubic kilometres of magma. That’s enough to bury the entire United States in a foot-thick layer of ash & rock.
jNGVa TIL that Thomas Jefferson actually helped suppress efforts to abolish slavery as president of the United States
16arW TIL about a deep-sea fish called the stoplight loosejaw. It is so called because its lower jaw has no floor and it shines red light from photophores under its eyes, which it uses like headlights. Most deep-sea creatures can't detect it because no red light filters down to them from the sun.
ADjMa TIL there's a material called FOGBANK that's used by the US Department of Energy that's so top secret and compartmentalized, that the government once actually "forgot" how to make it due to a lack of actual records and dwindling institutional knowledge
M7yb TIL that a high school football coach got half the fans of his own team to cheer for the other team, because the other team was from a maximum-security juvenile correctional facility and didn’t have any fans of their own.