Eco projects face opposition in progressive hotspots from Brooklyn to Berkeley.

But Americans still pay little for fuel compared to most.

Stephen Mallon chronicles the repurposing of NYC subway cars.

Surface treatment technology combats emissions.

A photographer goes skyward to capture "industrial scars."

This ain't no Prius.

Roadkill as sustainable eating.

The Department of Energy unveils its new home energy ratings tool.

Former Formula One engineer unveils superlight eco car.

Zero emissions? That depends on where you get the electricity to charge your car.