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TIL of the Sword of Goujian, a completely untarnished 2000-year-old sword that was found in an ancient Chinese tomb. It also has an unusual sharpness for its age. This is due to its unique copper composition and the air tight scabbard it was found in, keeping it sealed from the elements.

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Z8WrY TIL of Santimamiñe Cave located in province of Biscay, Spain.It was discovered in 1916. Inside there's mural paintings of bison, ibex & bear from Mesolithic era. It was designated as World Heritage Site by UNESCO in 2008.
X0wb6 TIL Dippin’ Dots established a subsidiary focused on freezing, pelletizing, transporting, and storing microbiological materials
kJLMg TIL Michael Jordan told director Ben Affleck that Viola Davis "has to" play his mom in Affleck's film Air. Casting Davis in a film was a lifelong career ambition for Affleck. When she said yes, he concluded that "a lot of it had to do with me being like, 'Michael Jordan wants you to play his mom.'”
vPYG4 TIL Many schools don’t teach cursive writing anymore. When the Common Core State Standards (CCSS) were introduced in 2010, they did not require U.S. students to be proficient in handwriting or cursive writing, leading many schools to remove handwriting instruction from their curriculum altogether.
4kRyJ TIL the screw thread is believed to have been invented around 400 BCE, by Archytas of Tarentum, a Greek philosopher sometimes called “the father of mechanics.” The general principle of the screw was applied early on, in cities like Pompeii, to extract olive oil and grape juice