"Wildlife biologists and climate scientists overwhelmingly agree that the disappearance of Arctic sea ice will lead to a sharp drop in polar bear populations. But some skeptics remain unconvinced, and they have managed to persuade the Canadian government not to take key steps to protect the animals."

"President Obama's energy team is mandating up-front standards for smart grid technology to ensure that what is built by the disparate forces involved works and is efficient."

Tough new efficiency standards haven't killed the incandescent light bulb -- but instead are spurring inventors to make better ones.

Terry Tamminen, former environmental advisor to California's Gov. Schwarzenegger, is a key player on global climate change now.

The EPA says North Carolina Has More 'High-Hazard' Sites Than Any Other; the Industry Calls Them Safe.

Urban farmer Will Allen, half a mile from Milwaukee's biggest housing project, is different from others in the good-food movement.

"Studies Are Homing in on Which Particles Polluting the Air Are Most Sickening -- and Why"

Voting with the GOP might seem like an easy political choice for Idaho Democrat Walt Minick. But could it be a problem when he needs clout to help the state?

"TUCSON, Ariz. (AP) -- Long dependent on wellwater and supplies sent hundreds of miles by canal from the Colorado River, this desert city will soon harvest some of its 12 inches of annual rainfall to help bolster its water resources."

"San Joaquin Valley farms are laying off workers and letting fields lie fallow as their water ration falls."

"A plan to restore salmon runs on California's Sacramento River could help revive killer whale populations 700 miles to the north in Puget Sound."

The National Climatic Data Center in Asheville, NC, is playing a growing role in understanding weather and climate change.

"West Virginia regulators and coal operators have not properly implemented state rules meant to keep strip mining from contributing to flooding during heavy rains over narrow mountain hollows, according to a new federal report."

The state budget crisis has caused the Massachusetts legislature to eliminate all funding for the state's Toxics Use Reduction Institute.

"Perhaps the last thing the Navy is looking for at the moment is a tangle with environmentalists. But that is exactly what it has -- over a proposed $100 million naval warfare training range off the northern Atlantic coast of Florida."