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TIL: One Hollywood movie studio complex was used only by the US military for making secret films --mostly editing footage of nuclear weapons tests. The activities of the so-called "Lookout Mountain Air Force Station" ended in 1969, but remained largely unknown to the public until the 1990s.

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x0J5 TIL China is the birthplace of the seismograph. Built in 132 AD, it consisted of 8 metal dragons holding 8 carved balls over 8 frogs. If an earthquake made the ground vibrate, the dragon facing the quake’s source would drop a ball into the mouth of its corresponding frog.
awYvZ TIL that the actor that plays Carl Winslow in the hit TV show “Family Matters”, Reginald VelJohnson, was only 31 years old when he began playing the role, even though he looked considerably older.
vP6mB TIL during World War II, Papua New Guinean ‘Fuzzy Wuzzy Angels’ carried 750 wounded up/down the Kokoda Trail. They prioritized feeding patients & built shelter with 4 sleeping on each side at night. No known injured soldier was ever abandoned by the Fuzzy Wuzzy Angels, even during heavy combat.
Egl67 TIL that the Society for the Prevention of Useless Giving was founded in New York in 1912 to oppose pointless Christmas gifts and the custom of employees giving expensive presents to bosses. It reached 6,000 members, with Theodore Roosevelt as its first male member, before fading during WWI.
g8ry TIL a woman attacked her husband when she found “disgusting pornography” in his car. By which she meant “copies of The Onion”.