› added 6 years ago

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TIL Paul Rudd had the cast of Infinity War sign the Captain America shield to earn 53k for charity.

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wo81 TIL that if the North Koreans used their largest nuclear bomb on the Empire State Building, it wouldn’t even reach Central Park
loKO1 TIL A 2008 review of 11 studies found flossing was no more effective than brushing alone in reducing plaque or gingivitis. A 2011 review found "some evidence" from 12 studies, and "weak, very unreliable evidence from 10 studies" that it did. The US government stopped recommending flossing in 2015.
R5n69 TIL: about explosion welding. First observed during WW1 when shrapnel wasn't just stuck but welded. Now done in controlled sheets for comercial material.
PNdV TIL that the Hudson Bay region of Canada has been found to have less gravity than the rest of the Earth.
lopR5 TIL that a town in the U.S. applied for Soviet foreign aid to fix a bridge after being denied by the state for two years and the state finally agreed to fix the bridge after Soviet journalists showed up