"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."

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?

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

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

The Center for Biological Diversity has filed the federal lawsuit on ocean acidification, charging that the EPA has failed to comply with its mandate under the Clean Water Act to protect Washington State’s ocean waters from excessive CO2.

Heart arrhythmias in females and permanent, deleterious modifications of a gene that plays a pivotal role in reproduction are two new problems being linked to bisphenol A. New findings about the toxicity of this chemical and data suggest human exposures may be higher than U.S. regulatory agencies have assumed.

Heavy lobbying by companies eager to get a slice of the $23 billion-a-year organic food business is watering down USDA "organic" standards to the point where consumers "are not always getting what they expect: foods without pesticides and other chemicals, produced in a way that is gentle to the environment."

"When you hear about dead zones in the Gulf of Mexico and the Great Lakes, they’re largely caused by pollution draining from the farm belt. It can take a long time and a lot of money to reduce pollution at factories. So they’re starting to pay farmers to cut pollution instead."

"A unique partnership between University of Vermont researchers and a federal farm program is providing time and space for grassland songbirds to reproduce on land where their nests usually are destroyed by haying."

"The American chestnut tree, which towered over eastern U.S. forests before succumbing to a deadly fungus in the early 20th century, appears to be an excellent sponge for greenhouse gases, according to a new study."