President Obama and Canadian Prime Minister Justin Trudeau unveiled goals for cutting methane emissions from the oil and gas industry by more than 40 percent by 2025, among other ambitious targets.
A study shows excessive saltwater from Florida Power and Light's nuclear plant is threatening Biscayne Bay and the aquifer that supplies much of Miami's water.
The transformation of Pittsburgh echoes the triumphs and challenges of cities across the country where gentrification is changing neighborhoods after a generation of economic decline.
An energy company is heading to court for the right to drill in Montana, near Glacier National Park. But some Native Americans and environmental groups want to stop the long-delayed project.
The legislation, which calls for big utilities to stop relying on coal by 2030, emerged from a January agreement between the companies and environmental advocates.
The Energy Information Administration says oil inventories are at "historically high" levels. Still, gas prices have been heading up because oil refineries are switching to more costly summer blends.
Aubrey McClendon, one of the pioneers of the shale oil revolution in the U.S. died in a car crash Wednesday at age 56 years. McClendon was indicted Tuesday on charges he conspired to rig the bidding process on oil and gas leases in Oklahoma.
The U.S. coal industry is fading. As more companies declare bankruptcy, they may not be able to pay for land restoration projects — and taxpayers could be left with the cleanup bill.