Over the past decade the study of environmental justice has sparked considerable debate, with conflict often exacerbated by conceptual and definitional muddles, scarcity of pertinent data, and disagreement over which methods to employ. This book by the late James Lester and his colleagues is unlikely to diminish the controversy. Yet, as a comprehensive attempt to clear out the conceptual underbrush and bring hard data to bear on difficult empirical questions, the book merits attention by all those concerned with issues of environmental equity. The preliminary findings have been presented at conferences from 1994 on, and many are already familiar with this research. As the authors note, however, they began with a skeptical posture toward the strident assertions made regarding environmental justice. In the end, they reconsidered that position and found much evidence to support concern over environmental inequities in U.S. society.