It's hard for some people to wrap their heads around the idea of not burning anything to get their heat, but at Indiana's Ball State, the entire campus will soon be heated and cooled by nothing more than heat from the ground.
We don't get that much power from renewables these days, but we've come a long way in the last 40 years. These maps--which track the number of solar, wind, geothermal, and biomass installations--illustrate that poignant fact.
Spending on renewable energy is at an all-time high around the world, and in some of the poorest places on Earth, it may mean leapfrogging over dirty power sources in favor of clean ones.
People love to prognosticate about how the world will power itself in the future. But only one person can be right. Here's some of the possible ways the next 50 years might turn out.
As the clean energy industry emerges from a challenging period caused by the global economic downturn, it is entering a stage of rapid change in which business models are being transformed against a backdrop of regulatory uncertainty.
The U.S. Department of Energy is continuing on its clean-energy loan spree, this time with a $96.8 million loan guarantee for an Oregon geothermal project.
