Cellulosic ethanol was supposed to be a climate savior, but a new study casts doubt on that assumption.
A Minnesota law aims to reduce fossil fuel use. Coal plants in North Dakota said no fair, and a federal court agreed, striking down part of the law.
Right now the embattled nation gets just 2 percent of its energy from clean sources. It's seeking U.S. investment in wind, solar, and biomass to help raise that number.
The administration is giving federal agencies more time to weigh in on the pipeline. That means a decision will probably be pushed past the midterm elections.
The coordinator for BP's cleanup effort dumped company stock while the magnitude of the spill was being covered up. The SEC calls that insider trading.
BP announced recently that "active cleanup" of the Gulf is over. But the Coast Guard is actually in charge, and it says "not by a long shot."
The White House held a solar summit, where it announced $15 million in new support for the solar energy industry.
The federal government will enhance its maps to show the danger of floods caused by storm surges. It's a lesson learned from Superstorm Sandy.
It will soon be the third state to require labels on genetically modified food -- and the first state willing to go there even if other states don't.