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TIL that horses about the size of an average duck once roamed North America

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gM5mD Today I learned "Good Times" is a spin-off of a spin-off. Good Times is a spin-off of Maude, itself a spin-off of All in the Family.
Y7e57 TIL that in November 1923, due to the hyperinflation in Germany post-WW1, one US dollar was worth 4,210,500,000,000 German Marks
woN5P TIL that U.S. President Polk made a deal with exiled Mexican general Santa Anna to lift the American blockade of Mexico so he could return and hand over territory. To the dismay of the Americans, Santa Anna immediately reneged on the deal and took up arms in the Mexican-American War.
loNga TIL that "Tattoo" is a military bugle call played daily in the U.S. Army, not long before "Taps", which is played last; the word has a completely different etymology than does "tattoo" meaning a design inked into the skin.
gMo8D TIL the "Jesus Nut", sometime referred to as the "Jesus Pin", is the only component holding the rotors to some helicopters' body. If it were to fail during operation, the rotors would completely separate from the body, causing a rapid unplanned decent.