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TIL In the 1920s, young women known as the "Radium Girls" worked painting watch dials with radium-based luminous paint. Unaware of the dangers, they often ingested the radioactive substance, leading to severe health issues and deaths.

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grL1W TIL that researchers have studied gambling behavior in monkeys to understand human risk-taking. Capuchin monkeys were given tokens to "bet" on a gamble with varying odds of winning. The monkeys showed similar behaviors to humans, suggesting an an evolutionary basis for gambling tendencies.
4QPg TIL the longest one-syllable word in the English language is screeched (9 letters)
Yv7A TIL that in Rome, the ancient temple where Julius Caesar was murdered is now a sanctuary for hundreds of cats
E1w77 TIL a Belgian mayor hired a DJ to play a music set as a way to drive out some visiting gypsies with loud music. The plan backfired as the gypsies just came out to party, the mayor received international bad press and, since no one had bothered to pay necessary composers’ rights, a 100 euro fine.
X0kjj TIL there was once a Danish chef who spent ten years undercover arranging a fake arms deal with North Korea - and filmed it all