David Suzuki' s autobiography limns a life dedicated to making the world a better place. The book expands on the early years covered in "Metamorphosis" and continues to the present, when, at age 70, Suzuki reflects on his entire life - and his hopes for the future. The book begins with his life-changing experience of racism interned in a World War II concentration camp, and goes on to discuss his teenage years, his college and postgraduate experiences in the U.S., and his career as a geneticist and then as the host of "The Nature of Things." With characteristic candor and passion, he describes how he became a leading environmentalist,