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TIL about the Davy Crockett - a tripod mounted gun developed by the US during the Cold War. It fired a tactical nuclear warhead with a range of up to 4 miles and a yield that caused fatal radiation within a radius of a quarter of mile

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awNY9 TIL that the closest living relative of bears are seals
KQgE TIL French Emperor Napoleon wore poison around his neck in case of defeat. When he finally used it in 1814, it had lost its strength and only made him painfully ill.
wL1rW TIL in the 1930s, bridge construction projects expected one fatality for every $1 million in cost. So, the Chief Engineer of the Golden Gate Bridge enacted the most stringent safety measures in history. He even formulated diets to help fight dizziness and sauerkraut juice “cures” for hangovers.
aKjb TIL that in 1988, Iran began a country-wide purge of political prisoners. People were beaten for missing daily prayers. One woman died after 22 days and 550 lashes, and the authorities certified her death as suicide because it was ‘she who had made the decision not to pray’.
pYR9e TIL that more than 50% of kids in China want to become astronauts when they grow up, while only around 10% in the US want to.