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TIL Ducks can keep their eyes open underwater due to a transparent third, sideways eyelid called a Nictitating membrane or haw. All birds have it and even humans have a vestigial remnant called the plica semilunaris.

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awE9b TIL 89 years ago, in April 18, 1930, the BBC's news announcer reported "There is no news," and piano music was played for the rest of the 15-minute news segment.
8ao1a TIL When Muhammad Ali fought in 1974, it is estimated that 1 billion people watched his fight, with the world population being 4 billion at the time, that's one quarter of humanity watching him fight.
dDyOZ TIL that the British Library has been crippled since last October by a cyberattack and it’s digital collections and services are still offline
7reYM TIL the ancient myths of Australian Aborigines portray the formation of geographical features in Australia, dating to 10,000 BC, with striking accuracy. The myths corroborate modern geological evidence, indicating they originated as firsthand accounts, preserved for millennia.
4koAw TIL there were 3,723 fatal work-related falls to a lower level in the US between 2011-2016; 23.1% (862) were from 10 feet or less including 10.8% (402) that were from under 6 feet.