"The chief of the U.S. Nuclear Regulatory Commission made her first visit Monday to the troubled San Onofre nuclear plant, offering assurance that the facility will remain closed until its safety is certain but giving few hints about its ultimate fate."

"Eating fast food three times a week may lead to asthma and eczema in children, say researchers who have looked at global disease and dietary patterns."

"A major new federal report warning the United States could warm up to 10 degrees Fahrenheit by the end of the century if global greenhouse gas emissions continue to rise has renewed hope among environmental groups that President Obama will make climate change a priority in his second term."

"CHESTER, W.Va. -- The ground here is leaking. Several neighbors have moved away to escape seeps coming out of the hillside. They say the leaks have dampened their backyards and infested their homes with mold. ..."

Do electoral politics and industry lobbying sometimes trump science when it comes to protecting people's health? In an unusual admission, a federal appeals court rules "Yes." And EPA agrees.

"An appeals court is siding with environmental groups that had challenged Environmental Protection Agency regulations on soot as too weak.

The three-judge panel ruled Friday that the EPA regulated soot of a certain size under weaker cleanup requirements than it should have.

"Pennsylvania is considering new air pollution limits for diesel- and natural gas-powered engines used in Marcellus Shale development that are stricter than those that exist now but, according to eight environmental groups, not nearly as tough as they could and should be."

"The operator of three coal-fired power plants in Maryland has agreed to pay a total of $2.2 million in penalties and fix long-standing pollution problems at the landfills in Southern Maryland and Montgomery County where it disposes of the ash from those plants, according to court documents."

"GENEVA — Delegates from more than 130 nations began a final round of negotiations on Sunday that are expected to lead to the creation of the first legally binding international treaty to reduce mercury emissions."

"Some Baltimore Gas and Electric Co. customers — Del. Glen Glass of Harford County included — are convinced that they don't want a smart meter wirelessly sending data about their energy usage day in and out."