Book excerpt: Through biographical examinations of some of the key figures in the debate on conservation, this book seeks to explore a range of subjects, such as the evolution of the conservation movement, its implications for policy-makers, and how it impacts the daily lives of people everywhere. The varying approaches taken by these individuals will serve to emphasize that there are many definitions of conservation, and that many viewpoints are valid. Detailed observations of important figures on both sides of the debate, including some of the most famous and familiar and some less so, provide readers with the knowledge they need to form their own opinions on this topic. Major biographies include individuals such as Rachel Carson, Dixy Lee Ray, John Muir, and James Watt. An introductory essay, an appendix of shorter entries on additional figures, and a bibliography are also included.