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TIL Charlotte Serber, the only female section head in the Manhattan Project, served as the head librarian, overseeing classified documents and research data. Maintaining the secrecy and security of information crucial to the development of the atomic bomb during World War II.

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MeDD7 TIL in 1959, Nikita Khrushchev described Mao Zedong to a Chinese diplomat as an "old boot that needs to be thrown out". 'Old boot' in Chinese meant prostitute, which led Chinese officials to believe Mao had been insulted as an 'old whore' due to misinterpretation.
neVeB TIL Steven Spielberg did not storyboard the D-Day invasion scene in "Saving Private Ryan" in order to make things more chaotic and unpredictable. In the original script, the entire invasion is covered in only seven pages.
j6N8R TIL Before telescopes, Chinese astronomers in the Song dynasty made naked eye observations of solar phenomena during sunrises/sunsets or through clouds. It was recorded on 11 January CE 1077, in the sun were black spots as large as plums
gMnQb TIL that a city councilman convinced a crane operator to lift a car 200 feet onto an uncompleted section of CA freeway in order to embarrass the state legislature for its budget mismanagement. It worked, they soon approved the funds and completed the interchange.
1a6jV TIL that the creator of Bitcoin is still unknown. The identity of Satoshi Nakamoto, the computer programmer who invented the digital currency is a pseudonym and could represent a man, a woman, or even a group of people.