The city embarks on an ambitious plan for an urban forest, with free food for all.
Denser, more populous cities are more energy efficient than their smaller counterparts.
Worldwide, the retail giant's stores cover as much land as Miami.
U.S. cities in the South have their own set of challenges to face in going green. But Atlanta, for one, is trying.
A video on what causes congestion, and how to fix it.
Some metropolitan areas emit much more CO2 than others.
Most smaller commercial buildings can't afford energy retrofits on their own. But what if they banded together?
The region has a bad smart growth record. But a new sustainable communities strategy just might change all that.
A UCLA class is trying to apply a strict building standard to an entire community.
Cycling has dropped precipitously in China's capital. Will it ever be popular again?
The Sustainable Native Communities thinks so.
They train the disadvantaged to transform garbage into beautiful furniture.
A controversial proposal seeks to help revive Southern California's troubled Salton Sea.
How a Portland foodstuff distributor brought his company into the city.
With new water-conscious projects, Burbank is becoming a model of water reuse.
Five charts can explain what the diabetes epidemic has to do with our current urban planning.