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TIL: Armin T. Wegner who resisted both the Armenian Genocide & the Holocaust. In 1915, he took hundreds of photos of the persecuted Armenians and was subsequently arrested. In 1933, he wrote a letter to Hitler denouncing the persecution of Jews, and was then sent to a concentration camp.

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R7Maj TIL that jellyfish have developed the most efficient form of swimming among all animals. They manage to achieve a 48% lower cost of movement than other aquatic animals.
8a1yK TIL The Wizard of OZ was an allegory for progressivism—The cowardly lion represents politicians bowing to big business, and the tin man and scarecrow are workers and farmers. Dorthy is America, erroneously following the yellow brick road (gold standard) but saved by her silver slippers (in the book)
rNGox TIL In 1762, John Montagu, the 4th Earl of Sandwich, invented the meal that changed dining forever. As the story goes, he was playing cards and did not want to leave the gaming table to eat. He asked for a serving of roast beef to be placed between two slices of bread so he could eat with his hands.
GAYj7 TIL Neanderthals sailed the Mediterranean. Stone tools, of the kind made by Neanderthals, were found in areas that were known to be distant islands at the time.
LkayQ TIL: If you do die in space, your body will not decompose in the normal way, since there is no oxygen. If you were near a source of heat, your body would mummify; if you were not, it would freeze. If your body was sealed in a space suit, it would decompose, but only for as long as the oxygen lasted