Hydraulic fracturing of underground shale to produce natural gas also releases uranium that is part of the rock, say researchers at the State University of New York at Buffalo. The uranium may pollute groundwater.

"Health and environmental concerns have become a factor in next Tuesday’s Navajo Nation presidential election."

"Criminal enforcement of federal water-pollution laws has continued a more than decadelong slide under the Obama administration, despite pledged improvements, according to U.S. EPA data."

"The U.S. Interior Department on Monday approved a permit for the world's biggest solar power project that will provide electricity to up to 750,000 homes."

"It took years for Illinois officials to discover that southwest suburban Crestwood was pumping contaminated water to its residents, in part because the state took village officials at their word that nothing was wrong. Such lax oversight is a problem in scores of communities throughout the nation, according to a new report from the U.S. Environmental Agency's inspector general that urged federal and state officials to conduct more rigorous inspections and adopt tighter reporting guidelines."

The majority of Republicans running for House and Senate seats disagree with proven scientific facts about global warming. That means that if Republicans take control of one or both chambers this November, there is little hope for legislation to address climate change.

The Bureau of Land Management is likely to re-open an ethics investigation involving Steve Henke, a former BLM district manager who recently took a job as head of an advocacy group for the oil and gas industry he used to regulate.

"Weak U.S. regulations on keeping captive tigers could be feeding the multimillion dollar international black market for tiger parts, according to a new analysis released by WWF and TRAFFIC, the world's largest wildlife trade monitoring network."

Kelly Gant told school board members that ever since gas drilling began near Argyle High School, her daughter has experienced asthma and headaches.

"Just three days after the U.S. Coast Guard admiral in charge of the BP oil spill cleanup declared little recoverable surface oil remained in the Gulf of Mexico, Louisiana fishers Friday found miles-long strings of weathered oil floating toward fragile marshes on the Mississippi River delta."