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TIL That back in 1739, measurements of the Earth were made that were so accurate, modern measurements of the circumference only differ by less than 8km. 40,000km -> 40,007.863km

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D1Y7g TIL of the most rural post office in the US; the Supai Post Office is at the bottom of the Grand Canyon and is serviced by a mule train that takes 2.5 hours to reach it. It services the Havasupai reservation and demonstrates the obligation of the US Postal System to service every community.
GAKy1 TIL that Stephen King decided on the location for the Shining, by opening an atlas and randomly pointing at a location, which happened to be Boulder, Colorado.
ANoZo TIL that McDonalds redesigned their McFlurry cups because hedgehogs used to get stuck in them, and die.
0jER TIL all characters on The Simpsons have 4 fingers except for God, who has 5.
V7rQ TIL That after the Dark Side of the Moon, Pink Floyd started working on an album entitled Househould Objects, on which only household objects were used as instruments. It was never officially released.