More than 20 of the world's top 50 cities ranked by GDP will be located in Asia by the year 2025, up from 8 in 2007. During that same time period, our research suggests, more than half of Europe's top 50 cities will drop off the list, as will 3 in North America.

In this new landscape of urban economic power, Shanghai and Beijing will outrank Los Angeles and London, while Mumbai and Doha will surpass Munich and Denver. The implications-for companies' growth priorities, countries' economic relationships, and the world's sustainability strategy-are profound.

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