Studying the environment in her third-grade class has inspired Judy Moody to make the world a better place. Never one to tackle any commitment lightly, Judy is driving everyone around her crazy with her earth-friendly attitude. She tries prohibiting her family from using anything made with rain forest materials, but gum, chocolate, and coffee are too much for them to give up. Inspired by Julia Butterfly Hill, the woman who lived in an ancient redwood to protect it from foresters, Judy dubs herself “Judy Monarch Moody” and tries taking up residence in her tree house to draw attention to the plight of all trees. Her enthusiasm is finally directed into a manageable campaign, and Judy leads her class in a massive recycling drive that raises money to plant trees in the Costa Rican rain forest. Occasional black-and-white illustrations appear throughout the narrative of the third great read-aloud chapter book featuring Megan McDonald’s irrepressible young hero. (Ages 6-9)