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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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O5n7 TIL that thanks to the transitive property of TV crossovers, Friends, Cheers, Seinfeld, MASH, and The Dick Van Dyke show all take place on the same universe
nkkG TIL Instead of donating money to the New York Food Bank, Toyota offered kaizen, a Japanese word meaning “continuous improvement”. Toyota sent its engineers to the soup kitchen and reduced wait time from 90 to 18 minutes.
awRbo TIL In Switzerland, local residents have a say in a person's passport application. In 2017, a vegan activist had her application rejected after residents voted against her 'for being annoying'
BmD TIL that in 2001, a 15 year old took down the websites of Yahoo!, Fifa.com, Amazon.com, Dell, E*TRADE, eBay, and CNN
j9Bn TIL That a dog was found during a 430-mile race through the mountains and jungle of the amazon. The dog was found wounded and still completed the race with the swedish extreme adventure team.