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TIL Ray Bradbury sold Fahrenheit 451 to Hugh Hefner in 1953. It was published in issues 2, 3, and 4 of Playboy.

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nejD9 TIL That a Southwest Airlines Pilot once held a plane for 12 minutes, to allow a man to see his dying 2 year old Grandson for one last time.
MojB TIL - Ozzy Osbourne took acid every day for two years “just to see what would happen”
grPP9 TIL that Leonardo da Vinci designed a robotic knight operated by cables. When modern engineers built a replica based on the designs, it was functional.
4kBX5 TIL the James Webb Space Telescope has a focal length of 131400 mm (131.4 m)
KY81a TIL that acarophenacidae mites mate inside the body of their mother before they are born. Normally one male develops per mother. He develops slightly faster than his sisters and inseminates them.