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TIL that both the lethality of black widow spider bites and the frequency of their post-mating cannibalism are both very low

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b6nba TIL that the world's largest desert is not the Sahara, but Antarctica. The Antarctic Desert covers an area of about 5.5 million square miles, making it the driest and windiest continent on Earth.
4X6GN TIL that only one sitting President has been arrested while in office: Ulysses S. Grant, was arrested for speeding.
4ZMN TIL in 1948 Idaho decided to airdrop beavers into wilderness areas using army surplus parachutes when they had outgrown their other habitats.
N7YXM TIL Advil has a candy coating
Me1r8 TIL In the 3 volume 2000 page Principia Mathematica it takes until page 86 in Vol.II to prove that 1+1=2, a proof humorously accompanied by the comment, "The above proposition is occasionally useful."