Although the home of the 10-gallon hat is hardly a modern ecotopia, Houston has the third-largest green job market in the country.

FORBES: Magazine Article

The actor helped develop Ecotopia, which is a new city building Facebook game that was designed to encourage conservation in the real world.

FORBES: Connect

And if futuristic eco cities float your boat, check out this self-sustaining ecotopia designed to produce energy and food in the North Sea.

ENGADGET: Inhabitat's Week in Green: sugar-covered lamps, IKEA's solar lamp, and the 30MPH all-wood racing bike