7 Billion Humans | Urbanization | January 2011 National Geographic Magazine

Urbanization: We became an urban species just recently--fifty one percent of us now live in cities. In 1800 three percent of the world's population lived in cities. By 2007, it was fifty percent, and by 2050, seventy five percent or more will live in cities.

Three of the top twenty urban hubs are now in China--a result of the largest human migration in history when peasants moved to the cities for economic opportunity. Like all living things, in cities or not, we are hard-wired...
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Created 15 Nov 2011 | Last updated 25 Jul 2015

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