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TIL that digital cameras were developed so spy satellites could send images back to earth more quickly. Before digital cameras in 1976, spy satellites used film. After the film was shot, the satellites loaded the footage into capsules and dropped them from orbit into the atmosphere for collection.

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aQ4A TIL Ernest Hemingway begged his wife not to send him for more electroshock treatments because he lost so much of his memory he couldn’t even remember his own name. He committed suicide the day after his 36th shock treatment.
W1Ld TIL that a generator exists that runs on urine. It can provide electricity for six hours on one liter of urine. The generator was invented by four African school girls.
4kEBg TIL that when bears hibernate, they "hold it in" for almost half a year. This is due to a fecal plug that forms in their lower intestine that prevents them from pooping while hibernating.
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