Despite dire warnings for our endangered planet, Jane Goodall says all is not yet lost — we can change course if we act now.

Despite dire warnings for our endangered planet, Dr. Jane Goodall says all is not yet lost - we can change course if we act now. And she should know. Her tough-minded optimism comes from her work as the world's foremost authority on chimpanzees. As a scientist and conservationist, she has produced landmark studies on the behavior of the chimpanzees in Tanzania's Gombe National Park that led to revolutionary insights into what it means to be human. Now, traveling 300 days a year, she has become a global advocate for all life, challenging everyone to see ourselves as caretakers of the planet. Her new book, Hope for the Animals and Their World , features the heroic work of men and women working across the globe to protect and preserve the earth.