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TIL The first full size nuclear reactor was not for power, but to convert Uranium to Plutonium because Uranium is so difficult to work with. It simplified production from 22,000 workers to only a few dozen.

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9Ybl7 TIL that negative probability exist and were discovered in 1942. Although highly criticized at first, they are now the bases of quantum mechanics and risk neutral probabilities in finance.
Ypyxv TIL in the 1968 and 1969 model years Ford dealership Rankin Ford offered their own car model - the RF-500. It was a combination of the Ford Custom body and LTD front end.
JY6n4 TIL that steel forged prior to the 1945 atom bomb explosions is highly sought-after because all steel forged after is ‘contaminated’ with Cobalt-60
x6Xwk TiL that Brian Wilson was only 23 years old when he produced, arranged, and co-wrote the Beach Boys album "Pet Sounds". The album has since been credited for revolutionizing music production and has appeared in many "greatest records of all time" lists.
AGVa TIL the Macy’s Thanksgiving Day Parade originally featured live animals from the Central Park Zoo, but they occasionally roared and scared children, so they were replaced with balloons.