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TIL of the "Tumi" scalpel, believed to be the oldest surgical instrument to exist (8000 BC). It was used for trepanation, the art of drilling a hole into the skull. By opening the skull, tribes believed that it would allow the demons that caused headaches, melancholy or epilepsy to escape the body.

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rRbVx TIL of Rinderpest: A virus seen in cows and other ungulates that's been totally eradicated throughout the entire world.
nW8V7 TIL that Kermit the Frog was inducted into the Library of Congress in their National Recording Registry for his song "The Rainbow Connection."
7rQwO TIL of cardiac surgeon Michael DeBakey, who developed MASH hospitals and many new surgical techniques, including the first treatment for aortic dissection. In 2005, he suffered an aoertic dissection and his life was saved by the surgery he invented.
woVM8 TIL Most of the iodine in dairy comes from iodine-based sanitizers used to clean the cow teats between milking. This residual iodine then seeps into the milk.
Zpw1a TIL That when cholera was appearing in London in the 1830s one prescribed cure was to inject turpentine and mutton stew up the anus