I think this is a tremendous entry-level article on renewable energy. It touches too briefly, however, on one critical point: transmission losses for electrical energy. More than a third of the electrical energy that we generate in this country is lost in transmission. Gore argues that we need to upgrade our electrical grid to reduce these losses. But clearly, a large part of our transmission losses are determined by our centralized power generation and the distances that energy must be transmitted. While it is gratifying to look at a map of the United States and see the potential for tapping renewal energy, we will also have to optimize the distribution of power generation.