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TIL about the moon landing’s ‘Human Computers’. Who were a group of women, who held math and science degrees, and were responsible for managing the moon landing’s incredibly complex calculations. They also did it real-time, by written hand, and were faster than any technology available before 1970.

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Z8NOY TIL that over 600 fighter pilots of the Swedish Air Force were killed in training exercises during the duration of the Cold War. Eventually in the 1960's flight safety became a concern because aircraft became more expensive.
wLro TIL that Bella and Edward’s relationship in the Twilight series meets all fifteen criteria set by the National Domestic Violence Hotline for being in an abusive relationship.
rN0jo TIL that GameBoy and GameBoy Color cartridges have a watch battery inside of them to power the chip for savefiles.
kOZk5 TIL of Stubbins Ffirth who attempted to prove that Yellow Fever wasn't contagious by smearing vomit, blood, saliva, and urine from patients in open wounds on his arms. While he never got sick, it later emerged that the samples he used had come from late-stage patients who were no longer contagious
LQopp TIL that 75% of Canadian English-language TV shows are from the US. By contrast, the top ten TV shows in Quebec are all local productions. While French Canadians love watching American films dubbed in English, they prefer low-budget Quebec TV shows (téléromans) to big-budget American ones.