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TIL that since modern civilizations and languages likely won't exist 10,000 years from now, signs warning about nuclear waste (which will still be dangerous then) have to be designed to be understood by anyone, without the use of language. These tools include pictograms and hostile architecture.

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Oo4RX TIL that President Ronald Reagan wrote in his diary that the 1983 film The Day After "left me greatly depressed" and that it changed his mind on the policy on nuclear war. Reagan's memoirs drew a direct line from the film to his signing of the Intermediate-Range Nuclear Forces Treaty in 1987.
QJBna TIL the 1959 film "The Tingler" was about a parasite that causes tingling sensations in victims. The films producers rigged surplus WWII aircraft motors to random theater seats, so viewers would "feel the tingler" when it attacked. Some viewers were also paid to pretend to scream and faint
W0Bd TIL Ed McGivern was able to fire five shots at five yards into a silver dollar in 45/100ths of a second, shoot six hand-thrown clays, shoot a dime on the fly and that his Guinness world record for “The greatest rapid-fire feat” still stands (1932).
nWpxG TIL In 1376, the Pope excommunicated the entire Florentine government, banned the city from all religious activity, sanctioned florentine companies abroad by forbiding christians from dealing with them and made it legal for all christians, anywhere, to capture or enslave florentine citizens
5YGx8 TIL The US army maintains a public list of deserters