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TIL there are 7 states where its legal to own a pet bear

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6Eg68 TIL If you have a rope long enough to wrap around the entire circumference of the globe. The rope is 24,901.55 miles long. If you now want to lengthen the rope so that it can hover one foot off the ground at all points on earth. It only takes just 6.28 feet more of rope.
loK9K TIL a Swedish mathematician (Arne Beurling) single-handedly deciphered and reverse engineered an early version of the secret German communication system in WWII. This early system is considered more difficult than the later Enigma system deciphered by Alan Turing.
YpeLW TIL that US telecom companies are legally required to provide a backdoor to law enforcement for wiretapping
0wD71 TIL while Thomas Edison is credited with inventing the lightbulb, the filament inside that actually mans the thing work, was actually invented by the son of two freed slaves, Lewis Latimer.
J1YRk TIL The hippocampus of food-storing birds increases in size by up to 30% for a short period each year, so they can remember where they hid their food.