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TIL the underbelly membrane of lobsters is the toughest material of all natural hydrogels, including collagen, animal skins, and natural rubber. The membrane is about as strong as industrial rubber composites, such as those used to make car tires, garden hoses, and conveyor belts.

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69GJY TIL In 1924, the federal government funded enormous concrete arrows to be built every 10 miles or so along established airmail routes to help the pilots trace their way across America in bad weather conditions and particularly at night, which was a more efficient time to fly.
nW6KG TIL that Ferdinand Magellan, famed Portuguese explorer credited with planning and leading the first expedition to circumnavigate the earth, died halfway through in the Philippines.
Oovg1 TIL: Buckey O'Neill of the "Rough Riders" insisted officers shouldn't duck when shot at. To a concerned fellow soldier he blew cigarette smoke and said, "Sergeant, the Spanish bullet isn't made that will kill me." The same day, a Spanish bullet fatally struck him through the mouth and out the skull.
x6EyB TIL australia is such a poor and backwards country that the "democracy sausages" they use to bribe people to vote, are not even given to them in buns, they put it in a regular slice of bread instead
9YwpM TIL in 1901 Spain, a woman adopted a male identity and married another woman. The couple was later discovered and had to escape to Argentina. Their marriage certificate was never annulled, so this is the first recorded same-sex marriage in Spain, 100 years before it was legal.