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.

EPA tightens regs on drinking water toxicity.

Financing models make going solar affordable.

Back to the drawing board.

A photographer goes skyward to capture "industrial scars."

Spooky sculpture haunts a French forest.

Roadkill as sustainable eating.

Winter resorts look to reduce footprints.