World's fastest-growing cities

By 2050 most of the world will live in cities, a shift that will influence culture, investment, and policy. Here are the top spots for projected growth, according to the London-based City Mayors Foundation, which studies urban affairs:

Sources: City mayors, Hong Kong Trade Development Council, US Department of State, websites of cities

1. Beihai, China

This seaport city of about 1.5 million people in the Guangxi Zhuang Autonomous Region leads growth projections at more than 10 percent annually.

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