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TIL coquina (a stone made from cockle shells) was used for forts in the era of heavy cannons because cannonballs sank into the walls instead of shattering or puncturing them

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XENPQ TIL that dolphins have "bromances" in which two males may pair up for as long as 15 years, helping each other to hook up with female dolphins.
E1JVx TIL In 1996, a group of scientists claimed to have found evidence of microscopic fossils formed by Martian primitive life billions of years ago on a meteorite discovered in Antarctica.
neeeG TIL in Finland, some children read to dogs and cows because they actually like listening and are extremely attentive.
e9j6 TIL Kidney beans are toxic and possibly deadly if not pre-soaked and boiled for at least 10 minutes. Poisoning can be induced from as few as five raw beans.
64w8 TIL that the director of the movie Cannibal Holocaust was arrested for murder 10 days after the movie premier, as the courts did not understand how an impalement scene was done, and actually believed that an actress was murdered for the scene.