Few of us realize that every time we flip on a switch, we burn a lump of coal--our shiny white iPod economy is propped up by dirty black rocks. Despite a legacy that has claimed millions of lives and ravaged the environment, coal has become hot again. Our desire to find a homegrown alternative to Mideast oil, the rising cost of oil and natural gas, and the mood in Washington will soon push our coal consumption through the roof. Because we have failed...