Valeriepieris circle

The Valeriepieris circle[1][2][3] is a circular region on the world map centred in the South China Sea that is about 4,000 km in radius and contains more than half the world’s population.[1] It was named after the Reddit username of Ken Myers, a Texas ESL teacher, who first drew attention to the phenomenon in 2013. The map became a meme and was featured in numerous forms of media.[4][5][6]

A recreation of the original map, whose caption stated: "There are more people living inside this circle than outside of it."

In 2015, the circle was tested by Danny Quah, who verified the claim but moved the circle slightly to exclude most of Japan and used a different map projection as well as more specific calculations. He calculated that, as of 2015, half the world's population lived within a 2,050-mile radius of the city Mong Khet in Myanmar.[2]

The most common visual of the circle, originally used by Myers and also featured by io9[7] and Tech in Asia,[8] used the Winkel tripel projection.

References
  1. The world’s tightest cluster of people, Danny Quah, London School of Economics and Political Science
  2. More Than Half the World's Population Lives Inside This Circle, Condé Nast Traveler
  3. A Small Circle in Asia Contains More Than Half the World's Population, HowStuffWorks - Science
  4. The Majority of the World’s Population Lives in This Circl, Visual Capitalist
  5. 40 Maps That Explain the World, The Washington Post
  6. Everybody Lives in Asia, Slate
  7. More than half of the world's population lives inside this circle, io9
  8. If More Than Half the Population of the World Lives in This Circle, Asia is the Future of Startups, Tech in Asia
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