› added 8 years ago

437

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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ek85 TIL of a terrorist strategy to avoid tracked emails is for one terrorist to compose an email, save it as a draft, while another terrorist logs into the same account to read and delete the draft.
mx70O TIL Many hipster "Craft Beers" are actually owned by large companies, including Coca Cola. (infographic only shows Australian brands)
p8Eae TIL that “cooties” originally was WWI soldiers’ slang for body lice that infested the trenches, before it evolved into a children’s game of contagion that even includes “inoculation” via a ball point pen and a rhyme, which emerged after the polio vaccine became common.
d8l6Z TIL: Potato bugs are legitimately called "Jerusalem Crickets" but despite their common names, these insects are neither true crickets nor true bugs, nor are they native to Jerusalem.
R5051 TIL that as of 2023 Canadian government health guidelines now define drinking more than 2 alcoholic beverages per week as "moderate risk" drinking and more than 6 per week as "increasingly high risk" drinking