"For the first time since Duke Energy’s defunct Eden, N.C., coal plant leaked thousands of gallons of coal ash into the Dan River nearly three months ago, the public is getting a look at how the nation’s largest electric utility company may change its containment of coal ash, a substance environmentalists say is one of the biggest threats to rivers and groundwater across the country."

"North Dakota this week confirmed the discovery of a new radioactive dump of waste from oil drilling. And separately, a company hired to clean up similar waste found in February at another location said it had removed more than double the amount of radioactive material originally estimated to be there."

"Automakers on average have reduced the greenhouse gas footprint of their model year 2012 passenger vehicles even below the levels required by U.S. EPA's new tailpipe emissions rules, according to a new report released today by the agency."

"The Department of Transportation is planning on sending a 'comprehensive' package of proposals regarding rail shipments of crude oil to the White House for its review [this] week."

"Wyoming explosion: The town of Opal, Wyoming was evacuated, but no injuries were reported in an explosion at a facility that removes impurities from natural gas and serves large numbers of customers in the West."

A major supplier to the oil and gas industry says it will begin disclosing 100 percent of the chemicals used in hydraulic fracturing fluid, with no exemptions for trade secrets. The move by Baker Hughes of Houston is a shift for a major firm; it's unclear if others will follow suit."

"A day after Canada issued stringent new rules for the transportation of oil by rail, federal regulators in the United States said on Thursday that they would push forward their own tank standards next week, potentially resolving a critical safety issue that has been mired in regulatory limbo for years."

"In the ongoing battle over offshore drilling, a federal judge in Alaska told regulators Thursday to redo an environmental impact study that underestimated the amount of recoverable oil and, potentially, the risks to delicate Arctic habitat."

"FORT WORTH, Texas -- A Wise County couple who sued Plano-based Aruba Petroleum, claiming that natural gas operations near their 40-acre ranch made them sick, has won a $2.9 million award from a Dallas jury."

"The warming climate is melting sea ice, opening U.S. Arctic waters to shipping and oil and gas development, but the National Research Council warned today that U.S. personnel, equipment, transportation, communication, navigation, and safety resources are not adequate for an Arctic oil spill response."