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TIL: That Golden Retrievers are the closest descendants of the now extinct Russian Tracker, a breed reportedly so intelligent it kept flocks of sheep alive for months, with no human help.

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80ma TIL researchers found that facial distinctiveness, considered less attractive, was linked to poor health in both men and women. Facial averageness, on the other hand, was linked to good health. One theory is that distinctive facial traits are tied to chromosomal disorders.
9YKn6 TIL Evariste Galois, genius French mathematician, felt certain he would die the next day in a duel he had been challenged to over a woman and stayed up all night solving a problem that had tormented mathematicians for centuries. He died the next day at 21 but his work that night endures still today.
QJQA9 TIL of Arthur Boycott, the man with the longest overdue library book in history. He checked it out in the 1890s and it wasn’t returned until nearly 120 years later in 2016, by his granddaughter
VMVXG TIL So-called 'gut strings' for acoustic Spanish guitars were originally made from the small intestines of slaughtered sheep. The production material only changed - to nylon - during World War II, when all available gut was used in the production of surgical thread for wounded soldiers.
eXaL TIL the United Arab Emirates seriously consider building an artificial mountain to change the climate