Young readers will discover all about the environment by joining the Sophie and Spencer on their walk around the neighborhood. They'll learn how we can all make our world a cleaner, healthier place to live in. What happens when we waste electricity? How does pollution affect our beautiful planet?  Stunning photographs combine with lively illustrations and engaging, age-appropriate stories in DK Readers, a multilevel reading program guaranteed to capture children's interest while developing their reading skills and general knowledge.With DK Readers, children will learn to read—then read to learn!