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TIL that Casanova, famous for seducing women, was a librarian
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wikipedia.org
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TIL The WWII era B-29 bomber didn't require fighter escorts because it had a computer aided gunnery systems that allowed incredible firing accuracy against attackers. One B-29 was attacked by 79 fighters at once, but was able to fight them off and down 7 of them in the process.
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TIL that Richard Norris Williams survived the Titanic disaster, was told his legs should be amputated due to severe frostbite, but refused—and went on to win the U.S. National Tennis Championships.
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TIL: In 2015, a team of Italian scientists at the University of Trento made spiders produce stronger webs by spraying them with water infused with nanotubes and graphene. These super spider webs were stronger than Kevlar.
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TIL that in 2014 Sony made a cassette tape that could hold 185 terabytes of data or the equivalent of 3,700 Blu-ray discs.
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TIL The United States only has 36 lbs of plutonium left. The Mars Curiosity rover uses 10 lbs of it all for itself.