US defends 'enormous' climate efforts at UN talks

(AP)—Anticipating an onslaught of criticism from poor nations, the United States claimed "enormous" strides in reducing greenhouse emissions at the opening of U.N. climate talks Monday, despite failing to join other industrialized ...

New mileage standards would double fuel efficiency

The Obama administration has finalized regulations that will force automakers to nearly double the average gas mileage of all new cars and trucks they sell in America by 2025.

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