NYC looks to the renewable energy potential of sewage treatment.

As many as 1.5 million new jobs could be created by looming EPA regs, says report.

Photos by Alexander Gronsky.

EPA tightens regs on drinking water toxicity.

Financing models make going solar affordable.

Floods and high temperatures mark the year's climate data.

America's first offshore wind farm given regulatory green light.

Desolate depictions of the American landscape.

Top court agrees to hear landmark eco lawsuit.