Bang has chosen a huge topic, and in some ways, it overwhelms her. Writing in the voice of the sun, the first-person narrative investigates various forms of energy on Earth, all derived in one way or another from the light and heat of this solar system's major star. It's an enormous task-how to describe the weather cycle, dams, turbines, electricity and its generation, windmills, fossil fuels (she mentions coal but leaves out oil), and solar cells in an illustrated book for fairly young children-and Bang is only moderately successful. Indeed, in the introduction to four pages of much denser end matter, the author mentions that her notes started turning into an encyclopedia, but, mercifully, an editor "cut them WAY back. Now those notes are on my Web site at www.mollybang.com, and I hope interested readers will do further research on their own." Overall, the author makes a valiant stab, and for science-minded children who can absorb a large amount of information, this title could be an interesting selection. Her stunning and technically accomplished illustrations, as always, are radiant and worth a look. Despite its shortcomings, this ambitious book is an illuminating auxiliary purchase.-Dona Ratterree, New York City Public Schools Copyright c Reed Business Information, a division of Reed Elsevier Inc. All rights reserved.