Wireless device converts 'lost' energy into electric power

Using inexpensive materials configured and tuned to capture microwave signals, researchers at Duke University's Pratt School of Engineering have designed a power-harvesting device with efficiency similar to that of modern solar panels.

Landfill helps power Marine base in Georgia

Chevron and the U.S. Navy are working together in Albany, Ga., to turn methane gas captured in a nearby landfill into renewable energy.