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TIL There is a kind of kite that work underwater, call tidal kites. In fact it is high-tech tidal turbines, generating electricity from the power of the ocean.

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7rBXr TIL the Catholic Church’s legal system, called canon law, was the first modern Western legal system, and is still the oldest continuously functioning legal system in the West.
x6LQ5 TIL about John McSherry, a MLB umpire who died during an opening day game between the Cincinnati Reds and Montreal Expos
5YB08 TIL that the females of most bird species only have one functioning ovary (the left one). The right one exists, but does not develop fully and is non-functional. This is probably an adaptation to reduce body weight for flight.
7rJa7 TIL that the Ocean sunfish (in french we call it: moonfish) is one of the heaviest known bony fishes in the world, weighing up to a ton, for an average length of 1.8 m (5.9 ft).
KOO0E TIL Aretha Franklin gave birth to her first child at the age of 12