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TIL the "heart burial" coincided with the Crusades where, rather than sending a whole body back for burial, they just transported the deceased’s heart preserved in lead or ivory boxes, often with spices to keep it from smelling too much.

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6woY TIL that the ‘root’ in root beer refers to the roots of the sassafras tree, an ingredient in early root beer recipes.
QMdp TIL Ketchup was originally a fermented fish sauce and did not include tomatoes, as tomatoes were thought to be poisonous at that time
X0ZYj TIL that the average flacid penis is 3.6 inches and 5.2 inches for an erect penis.
R7aV9 TIL the world’s oldest pool of water was found 2 miles down a Canadian mineshaft and dated at ~2 billion years old. By observing the sulphate in the water, researchers were also able to confirm that single-celled organisms had inhabited the pool at some point.
OokRL TIL during China’s Ming Dynasty, powdered smallpox scabs were blown up the noses of the healthy. The patients would then develop a mild case of the disease, & from then on were immune to it. Although the technique had a 0.5–2.0% mortality rate, it was better than the diseases 20–30% mortality rate.