Gr 3--5--Two physicists introduce all sorts of energy in this fine-tuned, colorfully illustrated title. Twenty-seven spreads provide information on everything from the sun's energy, thermal energy, steam, batteries, electromagnetism, fossil fuel, jet engines, nuclear fission, and fusion. There is no white space; the font sizes are set around well-executed cartoon illustrations. The writing is clear and inviting. The pictures help move the text along, adding interest and, occasionally, humor. The people shown come from all walks of life. It would have been helpful to have an index. VERDICT Despite the absence of an index, this powerful introduction contains accessible text and engaging illustrations. Perfect for primary grades studying energy.--Anne Chapman Callaghan, Racine Public Library, WI

A basic introduction to various forms of energy. Starting with the sun's energy and how, at a basic level, plants and animals use it to create their own energy, this book moves, more or less chronologically, through discovery and advancement to outline the basics of energy up through how space travel is powered. The physicist co-authors explain concepts in easy-to-understand ways and with logical sequencing. Measurement of energy, nuclear fission, and nuclear fusion are just a few of the big concepts that are briefly introduced, whereas some, such as electromagnetism, are better described and built on. In contrast, greenhouse gases are initially introduced without context in a paragraph about how the sun heats the Earth and later as a main factor in climate change, still with insufficient context. Graphic-design elements work well when diagramming items such as the windmill, steam engine, and combustion engine. Depicted scenes vary by time and culture but are predominantly European, with few figures of color included. Key words are set in bold with definitions generally explained in text, but the presentation requires linear reading and retention of previous information presented for full understanding. A table of contents is provided, but there is no glossary, index, or other supplemental backmatter. This resource is pretty to look at but hard to use. (Nonfiction. 8-11) Copyright (c) Kirkus Reviews, used with permission.