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A judge has ruled the Fish and Wildlife Service must revise a Bush administration recovery plan for the northern spotted owl.

After Pacific Gas & Electric, the giant California utility, began installing smart meters in the state's Central Valley, the company was swamped with complaints from residents that their utility bills had spiked. But an independent review of the smart meters released Thursday found that the devices were functioning properly and attributed the high charges to a heat wave last year that coincided with their installation as well as poor customer service by P.G.&.E.

The head of the review of the Intergovernmental Panel on Climate Change weighs in on the panel's leadership and flaws in its treatment of uncertainty.

Tibet's high-altitude meadows disappear as global warming and overgrazing accelerate desertification. "Once the grasslands are destroyed, they rarely come back," a Chinese official says.

The official who led China's delegation in recent climate negotiations says the right to a better life in poor countries trumps the responsibility to cut emissions.

A mountain lion wandered into the uniquely tolerant town of Berkeley, Calif., on Tuesday, and was ultimately shot by police. Heated debate has ensued.

The government of Abu Dhabi, with the help of a German consultant, is working on a plan to extend its emergency freshwater reserves from 48 hours to 90 days.

Styria, a province in southeastern Austria, is enjoying an economic boom generated in part by a project by 79 municipalities to promote local, green, self-sustaining businesses.

Selco, a solar energy company, has provided 100,000 mostly rural homes in southern India with solar lighting systems. Now it is deepening its market to include the urban poor.

Bill Gates adds detail to his call for a research push to expand energy choices without overheating the planet.

Josef Zotter produces organic fair-trade chocolate in Austria and says he has no desire to see his business expand.

A judge who overturned the six-month moratorium on deepwater oil drilling has rejected the government’s bid to have the challenge thrown out.

Exploratory drilling by a Scottish oil firm was halted after four Greenpeace protesters scaled the rig and suspended tents from its underside.

A tongue-in-cheek commercial from an anti-pollution group, already a hit on YouTube, delivers a message about what the city's pollution could portend.

Energy efficiency has taken a back seat in the debate on how to reduce use of fossil fuels, partly because of the difficulty of talking about efficiency concretely.

An anatomy of the oil giant's media response to the Gulf disaster.

From a lighting director and artist, a low-energy light festival with an environmental message.

Programs around the world sputter after Copenhagen meeting fails to offer direction or aid.

The state power company, CEZ, is awaiting proposals from three bidders for the construction of two nuclear power plants to supplement the two it has.

A new policy in response to the Gulf of Mexico oil spill is an attempt to cool the cozy relationship between government and the oil companies.

Exelon, which recently backed away from building new nuclear plants, announced that it was buying John Deere Renewables.

Homeowners who participated in a program that let them repay the cost of solar panels and other energy improvements through an annual surcharge on their property taxes must pay off the loans before they can refinance their mortgages, two government-chartered mortgage companies said Tuesday

Bjorn Lomborg's latest book is unlikely to bolster his popularity among those opposed to drastic immediate action to curb greenhouse gas emissions.

Politicians in Britain and Bulgaria are seeking ways to make nuclear energy affordable.

Both sides in the mountaintop removal mining debate are hardening their positions, taking their cases to Washington -- and to the courts.

Can personal passions can be reconciled with professional detachment? A reporter answers yes.

The federal agency that regulates offshore drilling is taking steps to end a long history of conflicts of interest and excessive coziness with the companies it is charged with policing.

The European Union's biofuels targets are driving an extensive "land grab" in Africa, a conservation group claims.

The Nuclear Regulatory Commission proposes a fine against an unlikely violator: a coal plant.

Biking is booming in New York City, with the number of daily cyclists rising to an average of 236,000 in 2009, up 26 percent from 2008, according to statistics compiled by Transportation Alternatives, a pro-biking nonprofit group.