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TIL Saint Catherine of Siena (1347-1380) was noted for her piety. “While tending to a woman with cancerous breast sores, she was disgusted. Intending to overcome that disgust, she gathered the sore pus into a ladle and drank it.”

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YpPlZ TIL that we humans have been dependent since 1977 on the blue blood of horseshoe crabs to keep our medicines safe. The crabs have been 'bled' for a chemical which is used to test for bacterial contamination in drugs. Finally, pharmaceutical companies are committing to a synthetic version.
WkA4 TIL Humans evolved not as predators but as prey.
wLK01 TIL Zambia is the only country to have entered an Olympics as one country (Northern Rhodesia) and left the games as another. Zambia declared independence on the last day of the 1964 Tokyo Olympics.
6Rd8 TIL “From whence” is grammatically incorrect. As “Whence” is defined as “From where”. So people who use it are essentially saying “from from where”
QVXX TIL that while George Harrison was being treated for a brain tumor in Switzerland, Ringo Starr went to visit him, but had to cut his stay short to go to Boston where his daughter was undergoing brain surgery. Harrison immediately asked Starr if he should go to Boston with him.