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TIL Joan Alexander, the original radio voice of Lois Lane, was fired, then showed up in disguise at the audition for her replacement. She got the part.

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8aZKb TIL that at one point the Chicago River was so dirty from the city’s waste that it made the water from Lake Michigan undrinkable. To remedy this Chicago reversed the direction of its river away from the lake and toward the Mississippi River
R7WZ7 TIL The first known vending machine was invented by the Greek engineer and mathematician Hero of Alexandria around 215 BC. These first vending machines were located in Egyptian temples and dispensed holy water in exchange for coins.
BrYeK TIL that in a "computational data-centric analysis" of the most significant figures in history "adjusted for recency bias", Ronald Reagan was ranked 32nd, above Paul the Apostle, Genghis Khan, Thomas Edison, Franklin D. Roosevelt, Freud, Mahatma Gandhi, Johann Sebastian Bach, Galileo, and Buddha
0wrNj TIL that Big Bird, from the American TV show Sesame Street, does not frequently appear in international versions of the show. Instead, he is replaced with other oversized birds that vary in color and size depending on which country they air in.
d5rE TIL The the power symbol found on every power switch is actually a 1 and 0. The English words On and Off were replaced by the universal numeral symbols 1 and 0 to bypass any possible language barriers as technology became more ubiquitous.