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TIL about the Kentucky Miner Who Scammed Americans by Posing as Hitler With ‘Invisible Spaceships’

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via reddit.com

W7dQB TIL the shade of semen naturally changes over the course of a man's life.
jNVAv TIL that a single Canada Goose has between 20 and 25 thousand feathers. Just a fraction of an inch of this feather insulation can keep a bird's body temperature at 104 degrees, even in freezing weather.
a80XA TIL that Ken Griffey Jr. and his father Ken Griffey Sr. were teammates when they both played in the MLB for the Seattle Mariners
6ErQ TIL That in 1909, you could fake-murder your friends in a wax bullet duel. It was even an Olympic event.
veGj TIL that Nobel Prize-winning biochemist Kary Mullis stated that his LSD use greatly helped him develop the polymerase chain reaction, a commonly used technique in molecular biology.