Natural gas is cleaner than coal, but only if the industry can control its methane releases. A new report says it's doing OK, but methane releases are underestimated.
When the U.S. Energy Independence and Security Act was passed in 2007, ethanol was viewed as a way to cut gasoline consumption and reduce dependence on foreign oil. Seven years later, times have changed.
The Keystone XL pipeline suffered a legal setback Wednesday when a state court voided the Nebraska governor's approval of the project. After more than five years of review, the fate of the Keystone XL pipeline still hangs in the balance.
Which new vehicle sold today has the lowest overall carbon footprint over its lifetime? It's the battery-electric Nissan Leaf, according to a study set to be released this spring.