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TIL that prior to the passing of the Clean Water Act in 1972 it was not uncommon for rivers in the US to catch fire, the Cuyahoga fire in Cleveland is just the most famous

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jAeR TIL that George Washington was, 179 years after his death, permanently made superior to any other five-star general/admiral with the title general of the armies.
0WXj TIL that as impressive as the Lockheed SR71 was, it had a secret older brother (the A-12) which was even faster, lighter, and had a higher service ceiling.
BaxK TIL; A typical adult human brain runs on around 12 watts—a fifth of the power required by a standard 60 watt lightbulb.
MXX7 TIL Housewives had a device that would charge 10 cents to ring the doorbell to prevent salesmen from harassing them
vP4OR TIL that Hugo Boss used to make uniforms for the Nazis