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TIL that explosive cartridges can be inserted into a B-52 bomber's engines to get them up and running more quickly, if needed. The "cart start" reduces takeoff time from about an hour down to ten minutes.

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Oo57X TIL that sea urchins got their name because they resemble hedgehogs, which used to be called "urchins." Sea urchins also used to be called "sea hedgehogs".
nePj9 TIL Health Officials are recommending glory holes for casual sex, so that less contact is made to spread the virus.
XEWeQ TIL that the film It's a Wonderful Life was initially a flop that bankrupted a studio and ended legendary careers until it entered public domain.
egK5 TIL that Pink Floyd’s album “The Wall” is cyclical, with the phrase “Isn’t this where…“ ”…we came in?” split in half between the first and last song. When the two songs are spliced together, the complete phrase “Isn’t this where we came in?” forms, proposing that Pink’s story repeats itself
8aYEK TIL that between 991 and 1018, the Anglo-Saxon kings of England paid an important economic tribute to the Viking invaders worth circa 2.8 million troy oz in silver coins. This explains why today there are still more Anglo-Saxon silver coins in Denmark than in England.