The defenders of the status quo argue that U.S. companies will be at a disadvantage if we tax carbon or invest in clean energy because "China's not doing anything." But there are three little problems with this logic.

Another in what will likely be many legal maneuvers aimed at either expanding or contracting the regulatory reach of the Environmental Protection Agen...

Because President Barack Obama has stood with us on the side of health, prosperity, and progress for all American families, I am proud to announce that the Sierra Club is endorsing him for reelection.

On the big issues, we scored three out of four with Obama this year -- not a bad record for a movement that supposedly was being ignored or taken for granted by the president.

You might be surprised to learn that I think climate protection may have posted its best quarterly results ever in the last three months of 2011.

The market has walked away from conventional coal plants. Should EPA try to hold back the tide of market forces? Should EPA set CO2 standards for new power plants that are twisted to make the coal industry happy?

WASHINGTON — Fire trucks and concrete mixers, semis, heavy-duty pickups and all trucks in between will, for the first time, have to trim fuel co...

AUSTIN, Texas — BP Products North America Inc. has agreed to a court order forcing the petrochemical giant to end what state officials say are i...

EPA Administrator answered questions about the new fuel regulations on Fox Business News today. Among the anchors' concerns: Will consumers buy into ...

One of the wrinkles in the automakers' federal bailout was that many in Congress and the American public didn't seem to trust the automakers to handle...

SACRAMENTO, Calif. — California was handed a big environmental victory when President Barack Obama endorsed a key part of the state's greenhouse...

Remember Burger King's old slogan, "Have It Your Way?" Looks like the auto industry's about to recycle it. Industry insiders are worried that Presiden...