A stunning, solar-powered retreat in Colorado's San Luis Valley

Smartly designed, salvaged wood doghouse sports a green roof

When supply outstrips demand, utilities look to consumers to help stabilize power grid

Less is more with Michael Katz's tiny, affordable prefab

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

Visionary eco architecture from a sustainable design pioneer

Is the risk worth the payoff?

Derek Diedricksen's salvaged material micro-shelters have mega-charm.