Ed Mazria's answer.

Sustainably-designed buildings are changing the perception of affordable housing.

Bogota's transformation.

Dutch planners tap into their design ingenuity and the natural landscape.

The Druk White Lotus School.

The U.S. General Service Administration's (GSA) Design Excellence program.

China's soaring population and rapid industrialization.

Taking the three R's to grand proportions.

Mayor Richard Daley take viewers on a tour through Chicago.

Architect and activist Sergio Palleroni continues his mission.

A look to the future.

New York combats the urban myth of the bustling city as a "concrete jungle."