Hill: Climate change is a global scourge that requires action by everyone. American efforts to protect the planet are particularly vital to prevent the worst impacts. What most people dont realize, however, is that these efforts will be implemented by the states -- and that could be a very good thing.
President Obamas plan for addressing climate change calls for reducing carbon pollution 17 percent below 2005 levels by 2020. The cornerstone is his directive to the Environmental Protection Agency to...