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TIL that a liter of surface seawater typically contains 100 billion viruses, most of them “unidentified and uncharacterized”

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via reddit.com

a8eVy TIL that while filming tokyo drift, the crew couldn't get a permit to film a scene in shibuya, but they filmed it anyway and paid a guy to pretend to be the director and spend a night in jail instead of the actual director
DOvP TIL Human kidneys can only make urine that is less salty than salt water. Therefore, to get rid of all the excess salt taken in by drinking seawater, you have to urinate more water than you drank. Eventually, you die of dehydration even as you become thirstier.
GAZb7 TIL that American mathematician Frank Nelson Cole spent "three years of Sundays" factoring 147,573,952,589,676,412,927.
P1J0w TIL that after South Korea built a 323 ft (98 m) flagpole with a 300 lb (140 kg) flag near the DMZ, North Korea erected an even taller 525 ft (160 m) flagpole with a 600 lb (270 kg) flag on their side of the border.
BaaD Today I learned that with less than an hour’s time of instruction, people can be taught how to hold their breath (static apnea) for over 4 minutes.