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TIL that the Castle Bravo nuclear test was 3x as powerful as the designers expected. This was due to unexpected fission of lithium-7, which greatly increased the yield of the other nuclear reactions.

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dwgQ TIL black children adopted by white parents have average IQ scores 13.5 points higher than black children adopted by black parents
G97 TIL that in the Balkans, two beers compete for market dominance: Union & Laško. Drinkers are fiercely loyal to one or the other. However, the rivalry is manufactured; they are made by the same company.
wLey8 TIL that the clapperboard ???? is used to later sync the sound and the picture.
oRvdW TIL S'mores, the classic campfire treat, did not appear under the contracted term until 1938 in a publication aimed at summer camps.
8elBb TIL that Mondragón Corporation, a worker-owned federation of cooperatives founded in 1956, is today the 7th largest Spanish company