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TIL a marine biologist has captured footage of a dreaming octopus rapidly changing color. He explains what the octopus is dreaming of when the color darkens: This is camouflage, like she's just subdued a crab and now she's going to sit there and eat it and she doesn't want anyone to notice her.

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PY0xe TIL: Hitler has commited another genocide besides the Jewish Holocaust. Histestimate that between 220,000 and 500,000 Romani were killed by the Nazis and their collaborators.
OWP1 TIL Sid Vicious, the bassist of the Sex Pistols, asked Lemmy Kilmister to teach him how to play bass with the words, “I can’t play bass,” to which Lemmy replied, “I know.”
NXgw1 TIL Hangovers cost the U.S. economy an estimated $220 billion in lost productivity every year.
0wXNy TIL a monk had erased and written over a book by Archimedes describing the foundations for calculus, centuries before Leibniz and Newton.
9wWpG TIL that Nottingham has an area called Gotham, the Wayne Manor filming location from the Nolan series and even its own Joker who attacked someone with a bowling ball.