About the Authors : F. Stuart Chapin, III is Professor of Ecology in the Institute of Arctic Biology, University of Alaska Fairbanks. Gary P. Kofinas is Associate Professor of Resource Policy and Management in the School of Natural Resources and Agricultural Sciences, and the Institute of Arctic Biology, University of Alaska Fairbanks. Carl Folke is Professor and Science Director of the Stockholm Resilience Centre, Stockholm University, and Director of the Beijer Institute, Royal Swedish Academy of Sciences.