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TIL The USA planned on using up to 12 nukes if Japan didn't surrender during WW2

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aQAL TIL that the Japanese created Nightingale floors that “chirped” when walked on for security.
nGMo TIL half of the US population lives in 9 states (CA, TX, FL, NY, IL, PA, OH, GA, NC)
J1P54 TIL That the Largest Denomination of U.S. Currency Was the $100,000 Bill
epVkk TIL Old kidneys are typically not removed during transplants, meaning recipients can often have 3 or 4 kidneys in their body after the procedure.
kO7Q5 TIL lewis Carrol developed ideas in linear algebra, probability & the study of elections & committees. Also one of his inventions was a writing tablet called the nyctograph that allowed note-taking in the dark, thus eliminating the need to get out of bed and strike a light when one woke with an idea