"The system closes roads, shuts down airports and causes power outages as it drops snow and ice from Texas to Illinois. Next in its sights: the Northeast."

"Federal investigators' findings in the San Bruno pipeline explosion probe suggest that thousands of miles of long-buried and untested natural gas pipelines across the United States are at far greater risk of failure than the industry and government regulators have long maintained, experts say."

"U.S. EPA has signaled that it won't reverse a George W. Bush-era policy that lets refineries burn some byproducts without treating them as toxic waste, drawing scorn from environmentalists, who had asked the incoming Obama administration to rethink the rule."

"Drilling service companies have injected at least 32 million gallons of diesel fuel underground as part of a controversial drilling technique, a Democratic congressional investigation has found."

"California Gov. Jerry Brown's decisions regarding environmental and energy issues will affect public and private spending and public health for the foreseeable future."

New sulfur dioxide standards set by Alberta in December 2010 are far weaker than some members of an advisory panel hoped for, environmentalists say. They suspect the oil industry has gotten to Alberta Environment.