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71

TIL that since 1949 all Treasurers of the United States, whose signature is on all dollar bills (along with the Treasury Secretary’s), have been women

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YwBB TIL A church choir had a practice session starting at 7:25pm one evening in 1950, and by 7:27pm the building exploded. No one was killed as they were all running late.
4kRVJ TIL tunicates are the only animals capable of producing cellulose. They can do this thanks to a gene they got from a bacterium.
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gMvg7 TIL that after his PhD thesis defense, philosopher Ludwig Wittgenstein clapped the two examiners on the shoulder and said, "Don't worry, I know you'll never understand it."