This series introduces very young children to the concept of caring for the environment in an attractive and accessible way. Based on children's real-life experiences, the books focus on things children can do to help the environment and keep the world around us clean. In this book, children learn what energy is, how it is used, and ways to save energy.This series introduces very young children to the concept of caring for the environment in an attractive and accessible way. Based on children's real-life experiences, the books focus on things children can do to help the environment and keep the world around us clean. In this book, children learn what energy is, how it is used, and ways to save energy.