Why The Prime Meridian Isn't Always In The Same Spot

Jan 8, 2015
Tom Scott takes a walk along the prime meridian in Greenwich, where here it is actually marked with a sculpture and a physical line. The prime meridian line is a longitudinal line that, along with its counterpart, the 180th meridian, divides the earth into the Eastern and Western hemispheres.

The prime meridian is expected and known for being at 0 degrees longitude. But truthfully, the prime meridian does not actually lay on exactly 0 degrees. This confuses some, but Tom Scott explains why this happens with reference to the earth's shape, history, and more interesting facts.
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