This energy auditor helps homeowners lower their utility bills. See the different kinds of rewards that come from energy efficiency.
The Tea Party and the Koch brothers are trying to end Texas's wind energy boom. They didn't reckon with Greg Wortham.
Hybrid, plug-in hybrid, or battery electric: Here's what's good, better, and best for the environment when it comes to cars.
The future may be coming to your garage soon. Batteries that deliver 150 or 200 miles of range are poised to make electric cars ubiquitous.
As climate change cranks up the thermostat to broil, especially in the world's poorest countries, economists have been studying how we can adapt.
Our antiquated system of regional grids is, for the most part, hardwired to route electricity from big power plants.
Los Angeles is kicking coal, but it isn't easy. This labor-enviro coalition is helping low-income Angelenos make the transition.
Solar Impulse is a sun-powered airplane with the wingspan of a 747, the weight of a small car, and enough battery storage to fly for up to 36 hours at a time.