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170

TIL Car makers employ sound engineers to give car doors that satisfying 'thunk' when closed.

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rxXW TIL that the founding fathers officially stated in the Treaty of Tripoli that “the Government of the United States of America is not, in any sense, founded on the Christian religion”.
woPb1 TIL 70 percent of human genes are found in zebrafish, which is one of the reasons why they are excellent for modeling human diseases such as Duchenne muscular dystrophy and melanoma. They are also used to study gene mutations and test new drugs.
wvoJ TIL 700 years ago a monk scraped off the ink of old parchment to write a new prayer book. Recent discoveries find that the paper he erased was a manuscript wriitten by Archimedes that laid out the heart of calculus thousands of years before Newton was even born.
epnZb TIL the first successful attempt to make a longer acting insulin was accomplished by combining insulin with protamine extracted from trout semen
grA7A TIL that Henri, Count of Chambord, was offered the French throne in 1870. He refused it when the French National Assembly would not meet his demand that they change the flag, leading Pope Pius IX to remark, "All that for a napkin!"