Paul Robbins is Professor and Director of the NelsonInstitute for Environmental Studies, University of Wisconsin -Madison-. His research interests include understandinghuman-environment systems, the influence non-humans have on humanbehavior and organization, and the implications these interactionshold for ecosystem health, local communities, and social justice.He is the author of Political Ecology: A CriticalIntroduction, Second Edition (Wiley-Blackwell, 2012) andLawn People: How Grasses, Weeds, and Chemicals Make Us Who WeAre (2007). John Hintz is Associate Professor of Environmental,Geographic, and Geological Sciences at the Bloomsburg University ofPennsylvania. His current research focuses on land use conflicts,environmental policy, and the US environmental movement. He haspublished in a number of journals, including CapitalismNature Socialism and Ethics, Place andEnvironment. Sarah A. Moore is Assistant Professor in the Departmentof Geography at the University of Wisconsin - Madison. Her researchfocuses on urban development politics, urban environmental issues,and environmental justice in the United States and Latin America.Her publications include articles in numerous journals includingProgress in Human Geography, the ProfessionalGeographer and Society and Natural Resources.