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TIL that crabs have evolved independently at least five times

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9Yn9p TIL there's an annual horseback competition where people ride 100 miles in less than 24 hours over craggy, mountainous terrain, with the best averaging 15 hours
5Y50r TIL Medieval scholar Al-Biruni,after accurately measuring earth’s radius and judging by the size of Asia and Africa,predicted the existence of a landmass in the ocean between Asia And Europe,similar in size to the known continents and with similar geological features,likely inhabited by humans
BEVL TIL that Federal employees will go unpaid for an unknown amount of time if the US government shuts down next week. Except for members of Congress.
v1kRx TIL the pygmy marmoset can can leap 15 feet into the air despite being just 5 inches, that is about 36 times it's own height. Equivalent to a 6 ft human jumping 216 feet into the air.
rLx0 TIL in 2011 a Gurkha single-handedly held off 12 Taliban as they attacked his base. Alone on the roof, he fought ‘an onslaught of rocket-propelled grenades and AK-47s’. He fired over 400 rounds, launched 17 grenades and detonated a mine. After his gun failed, he threw his tripod to fend a man off.