You have solar on your roof, a hybrid in your garage, and wind, water, nuclear, and natural gas all being pushed by various companies and interest groups. But, now, and for the foreseeable future, you’ve also got coal. And lots of it. Wired’s Charles C. Mann lays it out: “A lump of coal is a thoroughly ubiquitous 21st-century artifact, as much an emblem of our time as the iPhone. Today coal produces more than 40 percent of the world’s electricity, a foundation of modern life. And that percentage is going up.” That reality is bad news for the environment and climate change, and it leaves us with a big question: How do we minimize the damage?