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TIL that a librarian found smallpox scabs stored inside a 19th century medical book. In the 1800s scabs from infected people would be inserted into healthy people as a means of vaccination. These scabs have the potential to shed light on The evolution of the small pox vaccine used in the Us today.

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mbJx TIL of the sheela na gig, something like a stone gargoyle carving on churches and castles in Ireland and England, but is instead a depiction of a woman with exaggerated vulva
wLDpY TIL that Roseate Spoonbills get their pink coloration from the foods they eat. Crustaceans and other aquatic invertebrates contain pigments called carotenoids that help turn their feathers pink.
awaXJ TIL there is an enduring mystery about who wrote Black Betty (bam-a-lam), and what "Black Betty" stood for. It was first recorded in 1933, using black Texas prisoners.
mdRp TIL that Japanese monks known as the Sokushinbutsu caused their own deaths through self-mummification, which they thought of as a form of enlightenment.
0w7XM TIL that the Japanese and the Chinese use the same symbol for their currencies called the Yen(¥)