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TIL that the act of vomiting involves a complex series of chain-link reactions by your body that connect to a "vomit center" in the brain. The lower digestive system in cases of perceived poisoning shuts down and causes the stomach to convulse in order to bring everything back up the way it came in.

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rB5y TIL The last time humans traveled beyond Low Earth Orbit was Apollo 17 in 1972.
aVlA TIL researchers polled 250 children regarding their opinions on clowns; all 250 children in the study reported that they found clowns frightening
epeab TIL Isaac M. Singer started work as an actor, later turned machinist (lathe operator) to support himself since acting wasn't a stable income, by chance came across an early sewing machine and thought he could improve it. He could, and eventually he founded the Singer Sewing Machine Company.
R7rR7 TIL that Henry Ford used his personal newspaper, The Dearborn Independent, to argue that "the Jew" had caused WWI. He placed these newspapers in every new Model T automobile.
D1Lpv TIL that if you shuffle a deck of cards it will be in your favor that it'll be the first time in history your deck of cards will be in that particular order.