At the heart of the fight is Gregory Jaczko, chairman of the Nuclear Regulatory Commission, who is under fire for his management style as the agency weighed safety improvements after the Fukushima disaster.
UN-sponsored climate talks opened Monday in South Africa amid grim news on global warming and deeply divisive questions over how, or whether, to expand or extend the Kyoto Protocol.
Fuel economy is headed to an average 54.5 miles per gallon by 2025. But higher fuel economy standards won't force an end to the gasoline engine.
A presidential blue ribbon commission says the US government 'has not inspired confidence' and recommends that a new agency take over the search for storage sites for nuclear waste.