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TIL it is illegal to wear a bulletproof vest while committing a crime in the USA

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1KnP TIL the official definition of a second is 9,192,631,770 cycles of the Cesium atoms resonant frequency, and the NIST-F1 cesium atomic clock can produce a frequency so precise that its time error per day is about 0.03 nanoseconds, meaning the clock would lose one second in 100 million years
BWWK TIL that in China they constructed a building with embedded wind turbines to provide its own power
awGEN TIL that the seventh most populous city in the world, Mumbai, also has one of the highest densities of leopards (41 leopards) in a forest inside the city and the leopard population saves Mumbai US$18,000 by keeping the stray dogs population in check.
LNAp TIL There is a vigilante group of women in India whose mission includes beating up abusive husbands.
9gZm TIL Harrison Ford has had a species of spider (Calponia harrisonfordi) and a species of ant (Pheidole harrisonfordi) named after him for his conservation work.