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TIL Rotational detonation engines are expected to replace rocket engines for space flight.

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via reddit.com

8evK8 TIL that some artificial raspberry flavorings are harvested from the castor sacs of beavers, which are located near the beaver's cloaca (excretory opening), giving the flavoring the nickname "beaver taint".
oavL TIL that Roman Emperor Augustus witnessed a man attempt to feed a slave to lamprey eels as a punishment for breaking a cup. Augustus freed the slave and had the rest of the man’s cups broken.
6RkW TIL That Nazi Hermann Goering said: “The people can always be brought to the bidding of the leaders. That is easy. All you have to do is tell them they are being attacked and denounce the pacifists for lack of patriotism and exposing the country to danger. It works the same way in any country.”
yQVwM TIL Steve Martin has a ringing in his ear called tinnitus, which he received while filming a pistol-shooting scene for the film, Three Amigos in 1986. He was quoted saying, "You just get used to it, or you go insane.”
QKDp TIL the three actors who were in ‘The Blair Witch Project’ were listed as “Missing, presumed dead” on IMDb before the movie’s release as part of one of the greatest viral marketing campaigns ever.