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TIL that all cats with 3 or more colors are females

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XE8yP TIL of Leona Woods, the only woman physicist on the team which built the world's first nuclear reactor as part of the Manhattan Project. She became a mother during the Project but hid her pregnancy as not to miss work. Afterwards as a professor, she authored >200 papers in physics and astrophysics.
D4wD TIL Freddie Mercury collected Koi carp, was a loyal godfather and rang his cats when he was away from home. Ten days before he died, Freddie said to his manager: “You can do whatever you like with my image, my music, remix it, re-release it, whatever. Just never make me boring”.
RkZ4 TIL a Salvadoran consul saved up to 40,000 people from the Nazis by giving them fake identity papers. Barely anybody has heard of him.
Wkpr8 TIL the first generation of stars in the Universe were all several thousand times more massive than the Sun and were made of hydrogen, helium, and trace amounts of lithium. All the heavier chemical elements were formed within their cores. One of these stars was observed for the first time in 2015.
R5dOl TIL television broadcasters sped up tapes of I Love Lucy reruns in the 1970s while using a special hardware effects unit to alter the actors' voices to their normal pitch. This effectively made more space (around 3 minutes) to run advertisements, generating more revenue for the stations.