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TIL that the first successful blood transfusion was done in 1628 by Richard Lower between dogs. Then in 1818, James Blundell performed the first successful transfusion of human blood to a patient.

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J1lYl TIL that sloths can starve to death on a full stomach
VMVZQ TIL The GPS (Global Positioning System) is owned by the U.S. Government and is operated by the U.S. Space Force.
yJB8 TIL that there is a second “Mona Lisa” painting held in a secret vault in Switzerland also thought to have been painted by Leonardo DaVinci that shows a much younger version of the female subject
R5gDw TIL Tolkien wanted to create what we would nowadays call a transmedia multiverse. "I would draw some of the great tales in fullness, and leave many only placed in the scheme. The cycles should be linked and yet leave scope for other minds and hands, wielding paint and music and drama. Absurd."
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