From street lights to city parks, community centers and fire stations, all Las Vegas city-run spots are now powered entirely by renewable energy, making it the largest in the U.S. to use...

When most people think "clean energy," solar panels and wind turbines typically come to mind. But what if the simple act of walking could create emissions-free electricity? Las Vegas is proving that...

High in the stark Nevada desert, a couple of hundred miles north-west of Las Vegas, is the shimmering circular mirage of Crescent Dunes. Ten thousand silvery glass panels, each measuring 115 square...