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TIL that in June and September 1963, President Kennedy federalized thousands of Alabama National Guardsmen in order to enforce desegregation in Alabama and end Governor Wallace's blockade of the University of Alabama and an Alabaman public school

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LQLjZ TIL that Mr Fantastic originally first met invisible woman (his wife) when she was twelve and he was in college. Marvel understandably retconned this decades later.
JQMQ TIL that the “Fi” in “WiFi” doesn’t mean anything (including Wireless Fidelity). The creators just called it that because it rhymed with “HiFi”.
gmoy TIL The U.S. ranks 3rd in liking the United States.
4rdg TIL I learned that you should only use a dab of toothpaste. The idea of filling the entire toothbrush is a marketing tool used to sell more toothpaste.
QpYd TIL that helium, when cooled to a superfluid, has zero viscosity. It can flow upwards, and create infinite frictionless fountains.