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Here come the megacities

By 2100, at least 10 cities are predicted to have populations over 50 million. How can society keep pace?

© iStockphoto.com | martinhosmart
Scientists predict that by 2100, Africa and Asia will be home to the world’s largest cities — at least 10 of which will have populations exceeding 50 million.

It’s impossible to know how cities will grow, but the stark fact, according to the United Nations, is that humanity is young, fertile and increasingly urban.

Already expanding rapidly into fertile agricultural land on its outskirts, Kinshasa is expected to be the world’s largest city in 2075. Photo courtesy of FredR (Flickr | Creative Commons)
China’s fastest-growing city, Guiyang is working hard to rectify the legacy of air and water pollution past urbanization has created. Photo courtesy of Andreas Weigend

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Ensia is a solutions-focused nonprofit media outlet reporting on our changing planet.