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TIL The population of Detroit is now less than half of what it was in 1940. Main reasons include high levels of crime and the failure of the automobile industry.

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Yddr TIL - There is no evidence that Betsy Ross designed the first America Flag. It is very likely that her descendants made up the story in order to get her into the history books.
9xpX TIL that a man named Roger Boisjoly and his colleagues attempted to stop Challenger from lifting off into space knowing that a disaster would happen, but ultimately failed.
PYWNZ TIL that Leonard Adleman said "Well, it's going to be the least important paper I've ever been on" when accepting to be a part of development of the RSA algorithm.
rreo TIL The U.S. home ownership rate is at a 48-year low.
JYD7v TIL that the Boston Museum of Science pulled a publicity stunt July 4, 1984 to promote their new dinosaur exhibit by carrying a 34 foot, 1,000 lbs., brontosaurus replica through downtown Boston by helicopter.