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TIL physicists have experimentally achieved temperatures below absolute zero. Using supercooled potassium gas and a system of lasers and magnetic fields to precisely manipulate the potassium atoms, physicists successfully “cooled” the gas to a few billionths of a degree below absolute zero.

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mx5lY TIL Jonathan Lee Riches who after hearing that Guinness World Records was going to name him the world's "most litigous person," responded by suing them.
Oo7o6 TIL the SS Richard Montgomery was an American Ship during WW2 that was carrying 7000 tons of munitions to Europe which sank and today holds thousands of tons of explosives and ammo near London.
0w9vR TIL That chickens are used to detect diseases that spread via mosquito. They don’t get ill from the diseases and don’t develop high enough levels of the diseases to spread them, but the we can still check for the diseases in their blood. They are also called ‘Sentinel Chickens.’
LdVr TIL that the opposing team receives three bases if a player catches a baseball in their hat
eyk TIL There has never been any record of a wild Orca killing a human, they only kill humans in captivity.