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TIL about Harry Wesley Coover Jr who discovered super glue (cyanoacrylate) in 1942. He ignored it as being too sticky for what he needed. He then rediscovered it in 1956 while at Eastman Kodak who put it into production. It gained notoriety in the Vietnam War as a way to close battlefield wounds.

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gR88 TIL Unlike other types of cancer which grow slowly, testicular cancer can take off overnight..
KYryJ TIL that Magnús Scheving (Spartacus, LazyTown) made a bet with a friend to master a sport chosen by the other within three years. He was assigned aerobics, while his friend was assigned snooker. Eventually, he became a national champion in aerobics; his friend became a national champion in snooker.
lwp1 TIL that a Canadian town is giving away free land. Dalhousie, New Brunswick’s population has dropped by 21% in 15 years, and is giving away parcels valued at up to C$50,000 to “anybody who’s interested — an entrepreneur or business. We’ll give ‘em the property”.
Zw5v TIL In Illinois, the legal definition of “candy” is specifically tied into the absence of flour. Whoppers contain flour and are taxed 5% less as a regular food item
WepB TIL in Kennesaw, GA, there is a city ordinance which requires all residents to own both a gun and ammunition.