This book is a result of a public symposium on "Human Population and the Environmental Crisis" at UCLA in October 1993, sponsored by the Center for the Study of Evolution and the Origins of Life (CSEOL). Each chapter focuses on a different aspect of the population-environmental problem. Because of the interdisciplinary nature of this work, it should serve in a variety of college courses dealing with the problems and concerns of world over-population and the questions it raises about the environmental consequences for planet Earth.