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TIL the first paramedics in North America were African American

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R7B86 TIL: Egg tempera is a painting medium that uses egg yolk to bind pigments. It was a ubiquitous technique during the early Italian Renaissance, when it was considered the standard for portable easel paintings. Botticelli, Raphael, and Andrew Wyeth all painted with tempera.
nyvd TIL Bruce Willis dropped out of the Expendables 3 because he wanted 4 million dollars instead of 3 million, for four days of work.
e0K15 TIL That ACME in the Looney Tunes Cartoons was supposed to be ironic. Acme comes from a Greek word meaning "pinnacle" or "peak" implying "the peak of greatness" and that the product would be the best you could get. Any product with the name in the show was guaranteed to fail spectacularly.
Vdnk TIL Heroin derives its name from “heroic”, as it was originally marketed as a non-addictive wonder cure to morphine addiction
akdA TIL only 10 copies of the fastest lens in history (Carl Zeiss 50mm/0.7) were ever made: one was kept by Carl Zeiss, six were sold to NASA, and three were sold to Stanley Kubrick