EcoWatch: Whats the state of clean technology in America? Think renewable energy (wind, solar, hydro power, etc.), adoption of electric vehicles, green building and many other factors. As shown by this new nation-wide index, some states are rising above the pack compared to others. Clean Edge, a clean-tech research and advisory firm, has released their annual U.S. Clean Tech Leadership Index, ranking all 50 states for their clean tech efforts. Solar and wind power, along with natural gas and energy efficiency,...