Still bothered by the failure of her last science project, Tanya vows that her Earth Day assignment will be impressive. Her idea, to plant a tree, meets endless roadblocks: The apartment manager won't allow her to plant the tree there; the last sapling at the nursery costs $30; she must negotiate with the park superintendent for permission to plant it on public property. Eventually, her perseverance is rewarded as her class goes to the park for a tree-planting celebration on Earth Day. This book is more than its strong environmental message. Tanya's class is peopled with a delightful mix of kids, whose ethnicity is subtly highlighted by Susan McGinnis' pencil drawings. Although most of the adults facilitate and support Tanya's idea, the project is clearly her responsibility. Readers will rejoice in Tanya's sense of accomplishment--and come away with Earth Day celebration ideas of their own.