"A new deal allows a radioactive waste storage tank to continue leaking for more than a year before its contents are pumped out at the Hanford Nuclear Reservation, the nation's most polluted nuclear site."

"Although not the primary source of Great Lakes algae, climate change is exacerbating the problem and making it harder to reduce phosphorus and other nutrients that help algae grow, experts say."

"The Environmental Protection Agency (EPA) doesn’t do enough to stop hundreds of hazardous chemicals from getting into waterways via sewage plants, a watchdog report found."

"The company promoting the controversial and beleaguered Pebble mine project lost a legal battle Friday when a federal judge threw out one of its lawsuits against the Environmental Protection Agency."

"Deborah Swackhamer, a professor of environmental health sciences at the University of Minnesota, decided last year to investigate the chemistry of the nearby Zumbro River. She and her colleagues were not surprised to find traces of pesticides in the water."

"The state Department of Environmental Protection might have used incomplete and inaccurate test information to decide whether chemicals leaking from a Marcellus Shale wastewater impoundment and a drill cuttings pit contaminated a water well and springs in Washington County."

"The U.S. Environmental Protection Agency announced a proposal to eliminate mercury pollution from dental offices nationwide."

"Pollution investigators have found toxic compounds in groundwater below the Delaware Air National Guard base matching those that prompted shutdowns this summer of the city of New Castle's entire three-well public supply network and two Artesian Water Co. wells."

"As a domestic energy boom driven by hydraulic fracturing spreads, so could strip-mining for sand needed for the controversial production process, introducing risks to water, air, public health and property values, according to a report issued Thursday."

"Procter & Gamble, the maker of Crest, has just pledged to eliminate microbeads from its toothpastes by March 2016."