China's urban population has exploded in the last 20 years and more than 200 cities in China are expected to have a population of more than 1 million people by 2025.

A new report shows that 133 out 206 American metropolitan areas had an increase in foreclosure activity this summer. Ray Suarez explores the spread of the foreclosure epidemic with Patchwork Nation director Dante Chinni and Rick Sharga of Realty Trac.