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TIL that in the 1980s one of the propellers salvaged from the wreck of the Lusitania was melted down to make golf clubs.

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5b08 TIL that a homeless heroin addict, James Bowen, got clean with the help of a stray cat, Bob, whom he found injured in 2007. James wrote a best-selling book, and in 2016 a movie was released starring Bob as himself.
xVNJ7 TIL Quebec engineering students invented a giant vacuum to clean up microplastics from beaches. At about 3 gallons/minute, it sucks sand into a tank which then separates particles by weight, so plastic can be filtered out.
eglg TIL a man in his 70s is the only person to have run the NYC marathon every year since it began. He ran it in about 5 hours in 2014 (link in comments).
8avwb TIL The NYC Metro Area has a bigger GDP than ALL of Mexico, Spain, or Australia. Effectively, that means that NYC makes more money than a first-world continent.
QND1E TIL Trained Dogs Can Sniff Out Lung Cancer up to 97%