Something very unusual has been taking place in the U.S. electricity sector over the past three years.
The U.S. currently gets 4 percent of its electricity from wind. But what if we ramped that up to 30 percent?
Cheap natural gas has helped drive down U.S. carbon emissions in recent years. But there are signs that trend is now stalling.
Green stimulus created jobs and reduced emissions, argues an Obama administration economist now back at Harvard.
After a freak storm in D.C. in June, local officials wondered why the electric utility wasn't burying more of its power lines underground. A new report looks at this strategy for cities across the country, and finds that the costs can vary wildly--often there are far better ways to prepare for blackouts.