A wave of urbanization propelling growth across emerging economies in unprecedented speed and scale. In the McKinsey Global Institute's second annual edition of Urban World, the report draws on MGI's ever-expanding Cityscope database, which provides views of more than 2,000 cities across a range of economic and demographic indicators, including new ones such as infrastructure, investment, water, containerized goods, and real estate. It also contains new data on the urban consumer classes and their purchasing baskets.