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TIL the Philippines consists of 7,641 islands

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oR5OR TIL of the Circumhorizon Arc, aka fire rainbow. This horizontal "rainbow" of colour occurs when the sun or moon is over 50 degrees above the horizon and an arc of light passes thru a very specific kind of cloud (Cirrus clouds made up of ice crystals parallel to the ground), at just the right angle.
5Y05B TIL that a 2017 study about fitness trackers found higher rates of error when the trackers were used by people with darker skin tones.
VBMGk TIL that Greenland sharks may live for over 500 years, making them longest-living vertebrate. They grow so slowly, that they reach their sexual maturity approximately at age of 150.
6bZ7 TIL a Broward County, Florida man has had 16 accidents, received 25 warning slips, and served 30 days unpaid suspension since 1994 due to bad driving. He is a Mass Transit bus driver for the county and, although his disciplinary troubles began only 8 days after he was hired, he is still employed.
7r75Z TIL "Box beds" – cabinets with beds in them and, sometimes, lockable doors – were used for privacy and safety in parts of rural medieval Europe before individual bedrooms were common. They became fashionable even in homes with bedrooms and remaind in use in Scotland into the 1900s.