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TIL about Han purple and Han blue. They are synthetic barium copper silicate pigments developed in China and used in ancient and imperial China from the Western Zhou period (1045–771 BC) until the end of the Han dynasty (circa 220 AD).

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kOpGE TIL of a cemetery island just off the coast of Cabuya, Costa Rica. During low tide, a land bridge will surface, connecting the island to the mainland, which allows people to travel on foot and even hold funeral processions.
9YOBQ TIL the Windows 10 default desktop image is actually a photograph and not made using CGI
olR TIL it’s the FCC that bans cell phone use on airplanes, not the FAA
yVPmV TIL Sperm Whales (The Largest Toothed Predators On Earth) Do Not Have Teeth In Their Upper Jaw But Sockets That Their Lower Teeth Fit Into.
EKQV TIL The band “The Who” were banned for life from all Holiday Inns when Keith Moon started a food fight with a 5-tier cake, once the police arrived he stripped to his underwear, jumped into his car, drove it through a fence and left it in the bottom of the Flint Holiday Inn pool.