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TIL there were four mass extinction events before the one that killed the Dinosaurs. The most severe killed a staggering 97% of all species. All life on Earth today is descended from the 3% that survived.

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7r5wr TIL the small town of Rangely, Colorado is home to a disused water tank that was repurposed into a concert and recording venue due to its internal resonance of up to 40 seconds.
JYwVB TIL the disney Pixar movie wall-e angered fat pride groups for its message towards obese people.
EgYDP TIL how the United States declared the end of WWII, on September 2, 1945. General Douglas MacArthur accepted Japan's formal surrender aboard the USS Missouri, which was anchored in Tokyo Bay with a fleet of almost 250 Allied vessels.
a8A9M TIL that the Avrocar was a real life flying saucer, developed by Avro Canada for the US Air Force to be used as a flying jeep
R7QM9 TIL: Of Rotary Jails, huge rotating carosel like jails that would "store" inmates in a large machine that would rotate to let them in and out. They were phased out partially due to inmates limbs being sheared off by the rotation.