We may be broke, but we have our wilderness -- for now

Planners need to acknowledge the history, geography and diversity of cities, says renowned urban thinker

Can the Ultra-Ex project save Cleveland?

Veggies and herbs thrive in space where development stalled

Conflict over resources could cause global instability, says U.N. official

With debt crisis looming, the GOP takes aim at environmental regs

US biofuels, wind, solar, and hydro production on the rise

San Francisco tops Green City Index, followed by Vancouver and NYC

Two engineers, one Palestinian and one Israeli, unite to bring renewable energy to embattled region

Switzerland looks to abandon nuclear power in favor of new energy sources