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TIL in 1981 members of a U.S. nuclear semiotics team believed if the world ended, survivors 10,000 years in the future might not know what the radiation symbol means. So they proposed breeding bioluminescent cats that would glow when they came near radiation to serve as living indicators of danger.

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newEG TIL about Nicolas Antoine, who attempted to convert to Judaism in the 1620s and then became a Calvinist pastor in the Canton of Geneva while secretly practising the Jewish worship. He ended up being burned at the stake for heresy on 1632
Epk7 TIL the movie “The China Syndrome”, which tells the story of a reporter who discovers safety coverups at a nuclear power plant, was met with backlash from the nuclear power industry for being “sheer fiction”. Twelve days later, the Three Mile Island nuclear meltdown accident occurred.
rN54M TIL That if you hold in a fart from escaping some of the gas can pass through your gut wall and be reabsorbed into your bloodstream. From there, it can end up being exhaled through your lungs, coming out of your mouth via exhaling.
X0AwQ TIL the dogs in Bluey are based on real dogs. Blue heeler and red heeler
OGngX TIL one of the key factors in the Nazi Blitzkreig was the wide use of Pervitin, an over-the-counter methamphetamine, available in Germany. The drug allowed soldiers to go sleepless for up to three nights and "dulled feelings of empathy, hunger and thirst and reduced sensitivity to pain."