This is a very long story about a boy who dreams of being a wizard who could save the world.  Then he learns about some of the dangers facing the world from global warming, and starts pondering all the future careers he could have to help solve the problem and be a wizard even without magical powers.  Side bars on every page explain the science Diego is learning about, and suggestions for action are listed in the back.  The story part is kind of cheesy (and like I said, long), and I’m not sure it really contributes that much to the science that is to be found in the side bars.  I think it would’ve been a stronger book if it focused more on the substance and less on the cheese.