As of 2009, the majority of people across the globe lives in cities and by 2050 that share is expected to reach 70%. In mature and emerging economies alike, cities are the engines of the global economy—in 2011, just the 300 largest metro areas accounted for 48% of total global output.
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To read the original article: Forget Big Suburban Campuses, Innovative Corporations are Moving Downtown | Brookings Institution
