"The Obama administration as soon as Wednesday will announce its plans for curbing methane emissions from the oil and gas sector, which the United States must do to meet its 2020 target for cutting greenhouse gas emissions, people familiar with the issue said Tuesday."

"The federal government is about to announce its first rules for the handling and storage of potentially toxic coal ash, months after tons of the waste spilled into a major river in North Carolina."

"Federal prosecutors charged Freedom Industries and six of its owners, managers and employees with criminal violations of the Clean Water Act related to the January 2014 chemical leak that contaminated the drinking water of 300,000 people in Charleston and surrounding communities."

"More than 16,000 miles of Virginia rivers are polluted, a new report shows. That’s up nearly 3,000 miles from the previous report two years ago."

"While the Obama administration is touting Virginia's pollution trading program as an 'innovative market-based approach' to cleaning up the Chesapeake Bay, Maryland's trading effort remains stuck in limbo after years of study and debate."

"Oil from a wrecked tanker is creating a disaster in the waters of Bangladesh's Sundarbans, the largest contiguous tidal mangrove forest in the world and a haven for a spectacular array of species, including the rare Irrawaddy and Gangetic dolphins and the highly endangered Bengal tiger."

"Road salt is a big help to roads and sidewalks in the winter, but it wreaks havoc in many streams in the northern United States, including Milwaukee."

"Environmental groups in Wisconsin are suing the state’s Department of Natural Resources, claiming that the agency hasn’t done its job in implementing recent federal air pollution regulations."