More people in history live in cities than ever before in our planets history.

Urbanization rates have increased dramatically in the last decade, according to a new report by the U.N. Settlements Program, UN-Habitat.

But the way people are urbanizing are changing. People aren't flocking to Europe and the United States as they did a century ago . A new class of cities is on the rise, and millions of people migrating to these new hubs throughout the developing world. 

Read more: http://www.businessinsider.com/fastest-growing-cities-on-the-planet-2012-10?op=1#ixzz29nLedv6T