EcoWatch: Change usually happens very slowly, even once all the serious people have decided theres a problem. Thats because, in a country as big as the U.S., public opinion moves in slow currents. Since change by definition requires going up against powerful established interests, it can take decades for those currents to erode the foundations of our special-interest fortresses. Take, for instance, the problem of our schools. Dont worry about whether there actually was a problem, or whether making every...