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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.

Some lenders are taking a stand on practices like mining and deforestation that may be risky to their reputations.

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.

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.

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 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.

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

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

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

A tongue-in-cheek commercial from an anti-pollution group delivers a message about what the city’s pollution could portend.

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

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

Learning which water sources villagers use and how far they carry heavy jerrycans of water is itself thirsty work in the Rwandan heat.

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

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

France’s Champagne industry is trying to cut the carbon dioxide it emits transporting billions of tiny bubbles around the world.

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