"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."

"A 15-mile stretch of the Ohio River closed after a fuel oil spill reopened to river traffic on Tuesday with some restrictions as containment and cleanup continued."

"CHESAPEAKE, Va. -- Dominion Virginia Power's plan to close its coal-fired power plant on the Elizabeth River would leave nearly a million tons of fly ash in a waste dump that has leaked arsenic and other contaminants into groundwater for more than a decade, company documents show.:"

"The solar industry is facing a looming shortage of photovoltaic panels, reversing a two-year slump triggered by a global glut."

"SAN BRUNO -- PG&E pleaded not guilty Monday to a new federal criminal indictment on felony charges linked to a fatal 2010 natural gas pipeline explosion here, and hours later, San Bruno officials requested that the state Public Utilities Commission preserve computer drives and digital data that could shed light on ties between the PUC and the utility it oversees."

"Oregon's Department of State Lands on Monday dealt a serious blow to Ambre Energy's proposed coal export project, denying a key permit needed for construction in the Columbia River."

"MIDDLESEX, Pennsylvania — If you stand beside Bob and Kim Geyer’s farm on Denny Road at 3:30 p.m. on a Wednesday, it is mostly quiet, except for the faint sounds of the local high school’s flag team band practicing in the distance."

"EDMONTON -- Warnings about higher levels of air pollution in the oilsands have emerged in a new provincial air quality report that calls for further investigation into possible pollution sources."