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TIL that oysters make pearls when an irritant enters their mouth and they deposit a mineral to coat the irritant and make it more bearable, forming a pearl.

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via reddit.com

m1Vrp TIL that Gianni Agnelli, the head of Fiat, controlled 4.4% of Italy's GDP, 3.1% of its industrial workforce and 16.5% of its industrial investment in research and was the richest man in modern Italian history.
yVQlp TIL President Jimmy Carter visited Three Mile Island during the disaster, not for a publicity shoot but because he was a trained nuclear engineer and wanted to know what was going on personally
b9xEj TIL that Tic Tacs actually have sugar in them, but because the serving size (1 tic tac) weighs less than 0.5 grams, the amount of sugar rounds to zero.
jNv5E TIL Mason bees can pollinate anywhere from 20-100k blossoms per day while honeybees pollinate only 50-1000 blossoms per day, making the native North American mason bee a far more efficient pollinator than the European honey bee.
wL5K7 TIL a fan of George RR Martin's ASoIaF guessed that " Hodor " meant " Hold the Door", to which Martin answered " you don't know how close to the truth you are "