"Energy is just another word for power, but did you know there are many forms of energy? While light may seem like its just there to help us see, it provides much-needed energy for our entire universe. This title explores the properties of light energy and how even the smallest blade of grass depends on it to grow. Full-color photographs, informative sidebars, and thoughtful questions will inspire young readers to learn more about light energy and how it can change into other forms of energy"-- Provided by publisher.