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TIL that in the 1960s, the U.S. Air Force drew up plans for a 4000-ton nuclear space battleship. It would have been armed with 500 nuclear missiles, propelled by nuclear explosions, and been entirely feasible with contemporary technology. President Kennedy was horrified by the idea and cancelled it

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NXYgJ Today I learned that, while A. A. Milne, the creator of Winnie the Pooh, named the character after his son's teddy bear, Pooh's design was actually based on another teddy bear named Growler, who was owned by the son of Milne's illustrator, E. H. Shepard.
eRdE TIL that Isaac Newton predicted that the world would end around 2060. He wrote this in a letter in 1704 after studying different religious texts. He also “wrote more about theology and alchemy than science and math combined.”
awDN TIL: The world produces enough food to feed everyone. World agriculture produces 17 percent more calories per person today than it did 30 years ago, despite a 70 percent population increase. This is enough to provide everyone in the world with at least 2,720 kilocalories (kcal) per person per day
loBZG TIL When Helium is cooled to a few degrees below its boiling point, will suddenly be able to do things that other fluids can't. Dribble through molecule-thin cracks, climb up and over the sides of a dish, and remain motionless when its container is spun due to its frictionless flow.
x9Mw TIL that jack o'lanterns were originally carved from turnips not pumpkins