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TIL that Bell distributed a manual cardboard computer to high school students in 1968 to teach them how computers work

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9Yv6r TIL Students at Columbia College are required to pass a swimming test before receiving their diploma, in addition to its rigorous Core Curriculum
kJ5je TIL Basketball superstar Karl Malone impregnated a 13yo girl when he was in college & even after he became a household name in the NBA, he avoided child support. He has also served as "rapper" Drake's personal mentor.
gMPp4 TIL a Chinese general once scared away an army of 10,000, with a flute. The well known general sat on the wall of his undermanned city playing the flute, with the gates flung open. The opposition assumed it to be a trap and retreated.
Br6Zx TIL that modern military submarines have a rescue buoy that releases during an emergency, and it remains attached to the submarine by a cable. Once on the surface it can indicate to rescuers the position of the submarine, and may include a telephone for communication with the trapped submariners.
OoWg4 TIL DeepSqueak software identifies rodent vocalizations using neural networks like those developed for self-driving cars. Researchers have found about 20 different calls, such as happy ones when anticipating a reward or playing with friends, or courtship when males are with females.