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TIL - After Apollo 11 landed they were immediately moved into a mobile quarantine facility for 88 hours to prevent the spread of “moon germs.” This process continued for Apollo 12 & 14 before the moon was proven to be barren of life.

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e0K45 TIL that prior to the passing of the Clean Water Act in 1972 it was not uncommon for rivers in the US to catch fire, the Cuyahoga fire in Cleveland is just the most famous
dDZGd TIL that Saddam Hussein commissioned a copy of The Holy Quran, etched in his own blood. It took 27 litres of his blood to draft the Quran.
5YyAB TIL that between 1967 and 1989 East Germany sent a massive amount of arms to ANYONE at war with Israel - to the tune of three quarters of a million Klashnikovs, 120 MiG fighters, 180,000 anti-personell mines, 235,000 grenades; 25,000 RPG launchers; and 25 million cartridges of varying sizes.
vP6NL TIL an 800 sq ft (74 sq m) trailer home in a trailer park in Montauk, New York sold for $3.75 million. This modest mobile-home park, Montauk Shores, once a working-class getaway, is becoming increasingly popular with billionaires and celebrities. Musician Jimmy Buffett recently bid on a trailer.
YZ5W TIL you can calculate the radius of the Earth using just a stopwatch.