Book excerpt: After her record-breaking two year tree sit, Julia Butterfly Hill has ceaslessly continued her efforts to promote sustainability and ecologically-minded ways to save the old-growth redwoods she acted so valiantly to protect. Here she provides her many young fans with what they yearn for most -- her advice on how to promote change and improve the health of the planet, distilled into an essential handbook. This book will be accessible to school-aged children, while accomodating the audience of parents and teachers who look to Julia as an example of how one person can "change the world." Packed with a variety of charts, diagrams, and interesting factoids, the book will be broken down into a series of steps and easy-to-follow lessons. It will be written broadly so as to accommodate all kinds of activism, though its core focus will be on environmental issues.