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TIL that our own stomach has to constantly secrete mucus to stop itself from being digested by our own stomach acid. Without that mucus, our stomach acid would eat through our stomach’s lining.

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XEXKj TIL many puzzle manufacturers reuse the dies which cut their puzzles into pieces, so pieces from one can fit into another. And one man has turned this into an art.
00Zy TIL that Screamin’ Jay Hawkins had so many illegitimate offspring that a website has been set up to identify them all
XE7nQ TIL that the Church of Satan doesn't believe Satan exists and bases their beliefs on secular and atheistic views.
KDxJ TIL that there is a hanging display in Chicago of 58,226 dog tags of every American soldier killed in Vietnam.
5VYKp TIL that the jacket that Jackie Kennedy (John F. Kennedy's wife) wore on the day of JFK's assassination cannot be displayed in public until the year 2103.