Cleaner-burning fuel is reducing dangerous levels of pollution – and saving money, too.
Since sunlight and wind can be unreliable, renewable utilities install big backups.
EarthTalk: Coal-generated power is still cleaner, cheaper than gasoline, experts say.
Yucca Mountain was supposed to be where the highly toxic material was sent. But Obama's energy budget leaves it out.
Wind power could feed 20 percent of the US energy diet. But first, the country needs a new energy network.
Long-promised cellulosic ethanol is in modest production, but hurdles remain.
Earlier this week, Fortune's eco-blog, Green Wombat, ran a story under the headline, "Wind jobs outstrip the coal industry."
Supporters see the plan's $24 billion on renewables as a first step toward a new energy economy.