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TIL In 1968, King Friday from Mr. Rogers Neighborhood wanted to build a wall to keep change out.

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a4py TIL since the 1990s, Carmel, Indiana has been replacing all signaled intersections with roundabouts. Benefits include gas savings of 24k gallons/year per roundabout; construction costs $125,000 less per intersection; injury accidents dropped by 80 percent and total accidents dropped by 40 percent.
R5N4Q TIL that until the early 1920s, most astronomers thought that the Milky Way contained all the stars in the Universe. Following the 1920 Great Debate between the astronomers Harlow Shapley and Heber Doust Curtis, observations by Edwin Hubble showed that the Milky Way is just one of many galaxies.
awnDM TIL there is an organisation that believes in voluntary human extinction to solve the worlds problems.
6rxm TIL that Gmail was believed to be an April Fools joke upon its release on March 29 due to its 1 GB storage space: Hotmail offered only 2mb at the time
N7YBE TIL: Physicians in the medieval times would swish multiple knights urine in their mouths to decide what they ate for the day.