"A new report named the Potomac the nation’s most endangered river, saying it is threatened by nutrient and sediment pollution that lowers the quality of drinking water and kills marine life and will only get worse if Congress rolls back regulations in the Clean Water Act."

"The Heartland Institute's board of directors was not consulted before the group launched an explosive billboard campaign last week, resulting in the resignation of one director and dismaying others, sources said."

"After spending five years in opposition trying to detoxify the Tories' image, David Cameron promised to lead 'the greenest government ever' when he entered No. 10, exactly two years ago. Matt Chorley investigates what became of that pledge."

"WASHINGTON -- Progressive lawmakers Sen. Bernie Sanders (I-Vt.) and Rep. Keith Ellison (D-Minn.) teamed up on Thursday to introduce legislation designed to stop subsidies to the oil, coal and natural gas industries, preserving an estimated $110 billion over the next ten years."

"In what the White House calls a milestone in its effort to cut red tape, the Obama administration today said it was overhauling or eliminating five regulations -- including a Clinton-era air-pollution rule -- in an effort to save $6 billion in unnecessary costs over the next five years."

"Six-term Sen. Dick Lugar (R-Ind.), who was defeated in Tuesday’s Republican primary, attacked the GOP's hardened stance on climate change as part of a wider broadside against 'unrelenting' partisanship he delivered after last night’s loss."

"Long involvement in Canada's tar sands has been central to Koch Industries' evolution and positions the billionaire brothers for a new oil boom."

"Firemaster 550, touted as safe, is the latest in a long line of flame retardants allowed onto the market without thorough study of health risks"

"SALT LAKE CITY -- An environmental activist is asking a federal appeals court to overturn his two-year prison sentence for disrupting an auction of drilling parcels on public lands near Utah's national parks."

"With a simple statement on Tuesday, State Farm Insurance became the latest company to withdraw its support from the Heartland Institute, a Chicago-based think-tank which claims a 'realist' position questioning that humans are responsible for climate change."