Earth has a water problem. People need water to live. But only a little of Earth's water is usable. How can you help? Join Trina to find out how to care for Earthâs water. Do your part to be a planet protector! Discover how to reduce, reuse, recycle, and more with Tyler and Trina in the Planet Protectors series, part of the Cloverleaf Books⢠collection. These nonfiction picture books feature kid-friendly text and illustrations to make learning fun!