Green criminology is now nearly 30 years old. In that time, a substantial literature has been written, the issues or subject matter addressed by that literature has expanded significantly, and the number of researchers who have contributed to that literature has multiplied many times over. These trends indicate that green criminology is now an established part of the more general field of criminology, and the persistence of this view suggests it will not disappear anytime soon. Our own involvement and contributions to the green criminological literature—to the study of green crimes and harms, assessments of environmental laws and their applications, the various forms of green (in) justice and environmental (in)justice that are related to the distribution of green crime/harm, pollution, ecological disorganization and patterns in and the effects of enforcement of environmental law on green crimes— have centered on taking a political economic approach to those concerns, problems and outcomes. Some of that work is empirical, and some is theoretical and definitional. This book is not an exception to the political economic orientation to green criminology we have developed over the years—it is, in fact, an expansion of our view on a political economic green criminology—and falls within contributions to theoretical and definitional development within green criminology. Increasingly, we believe, our view has become more closely aligned with environmental sociology and, as a result, of less interest within criminology.