Officials weighing federal applications by utilities to build new coal-fired power plants cannot consider their greenhouse gas output, the head of the Environmental Protection Agency ruled.

The Environmental Protection Agency Thursday set stringent new standards for airborne lead particles, following the recommendations of its science advisers.

The agency denied a request to cut the quota for the use of ethanol in cars, concluding that the goal of reducing the nation’s reliance on oil trumps any effect on food prices.

The agency said it would not meet a July 24 deadline for ruling on a request to reduce a federal mandate on how much ethanol must be blended into gasoline this year.

The agency said it would not meet a July 24 deadline for ruling on a request to reduce a federal mandate on how much ethanol must be blended into gasoline this year.

The Environmental Protection Agency announced a first draft of a rule that will govern injecting carbon dioxide into underground storage.

If a French-owned waste management company has its way, the Port Arthur, Tex., area will be the final destination for 40 million pounds of toxins from Mexico.

The difficult bottom line in the negotiations is that dealing with climate change will almost certainly hurt some industries and enrich others.

How a backlash against energy exploration could hurt the Republicans out West.