Growth of cities endangers global environment

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Manhattan at sunset.

The explosive growth of cities worldwide over the next two decades poses significant risks to people and the global environment, according to a meta-analysis published August 19 in PLoS ONE.

Researchers from Yale, Arizona State, Texas A&M and Stanford predict that by 2030 urban areas will expand by 590,000 square miles — nearly the size of Mongolia — to accommodate the needs of 1.47 billion more people living in urban areas…

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