"HARRISBURG — An unfinished piece of business with state oversight of Marcellus Shale natural gas drilling continues to rear its head. That’s the matter of how Pennsylvania should track and evaluate potential public health problems caused by hydraulic fracturing, commonly called fracking."

"The Tennessee Valley Authority board of directors voted Thursday to retire the Allen Fossil Plant in Memphis, and a new, combined-cycle natural gas plant will be built nearby."

"An oil pipeline spill that contaminated a river in the northern Mexican state of Nuevo Leon will take months to clean up, the country's top water authority said on Thursday."

"Drilling-wary Maryland is one of several East Coast states considering whether to open their lands to fracking as public health concerns mount."

"On the night of Sept. 9, 2010, a 30-inch natural gas pipeline buried underneath the city of San Bruno, California, exploded. The fire was so large and the corresponding roar so loud that many residents thought a plane from the nearby San Francisco International Airport had crashed."

"North Carolina House and Senate leaders announced a compromise on a stalled coal ash bill late Tuesday, days before legislators end their session."

"Entrepreneurs have been trying for years to get something valuable out of algae."

"As other states ban landfills from accepting low-level radioactive waste, up to 36 tons of the sludge already rejected by two other states was slated to arrive in Michigan late last week."

"WASHINGTON -- For the first time, the Environmental Protection Agency may require oil refineries to regularly measure the air quality at their perimeters. These fence line measurements will give surrounding communities – largely low-income communities of color – data on the level of pollution they are exposed to each day."