Yahoo: Below the Mandalay Bay Hotel in Las Vegas, they glimmer in the relentless Nevada sun like scales on a monstrous grey dragon. More than 26,000 solar panels cover 113,000 square metres of rooftop. It's the biggest solar array of its kind in America.
"Just look at its physical size," says MGM's chief sustainability officer Cindy Ortega from high atop the Delano hotel which overlooks the arrays. "We have a lot of sunshine here and we want to take advantage of that renewable energy."
The solar panels...