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TIL The first purpose-built (and large-scale produced) drone was the product of Reginald Denny. He served with the British Royal Flying Corps during World War I, and after the war, in 1919, emigrated to the United States to seek his fortunes in Hollywood as an actor.

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QNKDd TIL Sir Isaac Newton was obsessed with the occult, and developed the theory of gravity based on occult belief in “action at a distance”
yQPRJ TIL the average age of the signers of the American Declaration of Independence was 44. On the entire list of American Revolution participants, the youngest was Andrew Jackson, aged 9, and the oldest was Samuel Whittemore, 81 as of July 4, 1776. Eight were under 18 years of age.
pYANp TIL it is possible to have temperatures below absolute zero, but they are actually hotter than any positive temperature
e0le5 TIL of the Sodder children disappearance. The Sodder family still believes that 5 of its children who disappeared after a fire burned their house in 1945, were actually kidnapped by Mussolini in retaliation to George Sodder’s criticism of his regime
dDwGr TIL: The 1928 movie 'Noah's Ark'. While filming of the flood scene, 600,000 gallons of water was dropped on the set without warning the actors, so their reactions and fear on film were real. Three people drowned, one had a leg amputated, and many suffered broken limbs and other serious injuries.