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TIL The duck-billed platypus has enough venom during mating season to kill a dog or make a human seriously ill. The venom is immune to all kinds of painkillers including morphine and lasts for months

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GYEBG TIL Aluminum is so expensive to smelt from ore, yet so cheap to recycle, that up to 75% of all aluminum ever mined is still in use today
ANLPo TIL After a lawyer complained that Cleveland Browns fans were throwing paper airplanes, their lawyer responded "Attached is a letter that we received on November 19, 1974. I feel that you should be aware that some asshole is signing your name to stupid letters."
O47e TIL That the average NFL game has just 11 minutes of action, the rest is replays ads and people walking around.
NAjQ TIL A decade before the SR-71 first flew, the Military had a Mach 4.3 capable Ramjet created to test its own air defenses. It was so effective, it was cancelled to avoid embarrassing the military’s own air defenses any further. The man who designed it went on to create the SR-71 spyplane.
69NA8 TIL Diophantus of Alexandria, a mathematician from the 3rd century, came up with many mathematical equations that took a long time to solve. The last one, Fermat's Last Theorem, was first stated in 1637 and was proved in 1995 by British mathematician Andrew Wiles.