What On Earth Can We Do Author:Emily Sper With easy-to-understand language and colorful graphics, this fun and informative book introduces children to actions that help make our planet healthier-make less garbage; repair; reuse; recycle; compost; plant a tree; don't waste electricity or water. Simple explanations of electricity, carbon dioxide, global warming, and renewable energy, and ... more »the importance of trees and water, add meaning to the actions.« less