A new technology called LED lighting promises more savings in greenhouse emissions and longer appliance life than compact fluorescent bulbs -- at a price.

"The federal government should ban the use of lead weights, those fingertip-size chunks of metal that balance the tires of cars and trucks, says a petition filed with the U.S. Environmental Protection Agency last week."

"Camp Lejeune, a sprawling Marine base on the North Carolina seaboard, is the site of what some scientists call the worst public drinking-water contamination in the nation's history."

The toxic, PCB-laced sediment now being dredged from the Hudson River has to go somewhere -- a landfill in Texas.

"Environmentalists feel betrayed by the EPA's decision not to block new mountaintop mining projects."

"Federal officials must reconsider the irregular water releases from Glen Canyon Dam, which may harm the humpback chub, an endangered fish."

Agriculture Secretary Vilsack took personal control over logging and road projects on tens of millions of acres of National Forest in a temporary effort to resolve controversy over the "Roadless Rule."

Congress decision, under pressure from the gun lobby, to allow loaded, concealed weapons in National Parks creates problems for rangers trying to keep people safe.

"Researchers find climate change is already having a 'sometimes hidden and often unequal' impact on minorities and poor in the United States."

Energy Secretary Chu and CA Gov. Schwarzenegger today will dedicate the National Ignition Facility, a mammoth laser device designed to explore fusion energy.

The flame-retardant chemicals known as PBDEs are virtually ubiquitous in U.S. waters. New research shows that when PBDEs are exposed to wastewater treatment, they can generate dioxins.

"U.S. government and university scientists are partnering to form a new cooperative institute that will use satellite observations to detect, monitor and forecast climate change and its impact on the environment."

A power struggle has erupted over a North Carolina river.

Touring the Everglades by airboat, Interior Secretary Salazar promised more federal funds to restore them.

Private well water should be tested yearly, two major scientific bodies say -- sometimes more often when kids are drinking it.