The vast eruption of books about energy that has appeared in the past decade has yielded few that could properly be called learning or. alternatively. teaching texts. This one is based principally on ten years of course offerings to senior undergraduates and graduate students at the Massachusetts Institute of Tech- nology. and to middle-level and senior executives who attended accelerated study programs there. Teaching and learning are different; the first is an external act meant to stimulate the second. which is a very internal one. They are surely related. but it does not automatically...