Boundaries is a useful resource for teaching environmental ethics. It provides specific case studies that bring abstract issues down to earth, and provides a wide-ranging and comprehensible theoretical framework. The first couple of chapters are excellent in summarizing schools of thought. I was especially impressed with the political discussion in the second chapter. It positions environmental issues around the individualism and collectivism dichotomy that can help place contemporary environmental questions in terms relevant to traditional political philosophy. I also appreciate how the authors incorporate religious perspectives at various points throughout the book. This is a much-needed corrective to the short shrift that religious views often receive from the academic political left.
Not all of the chapters are as good as others – some of them spend more time on public policy than philosophy, but there is enough philosophical context in the other chapters that the relationship between the two can be teased out by students and the instructor. Each chapter begins with a dialogue and then moves to an analysis of the positions contained therein. The dialogues are not literary masterpieces and at times I found myself skipping them to get straight to the analysis, but they could be pedagogically effective in the classroom.