It's time for some fresh thinking about landfills. They provide an invaluable service, doing the world's dirty work without much fanfare. But some landfills are becoming heroes in the quest for eco-friendly energy. By partnering with Renewco, they're turning an onerous — and odorous — waste byproduct, landfill gas, into marketable natural gas. It's a new revenue stream for the landfill operator, it's good for our air, and it helps secure America's energy future. That's a powerful thought.