Charles L. Redman is the director of the School of Sustainability, the Virginia M. Ullman Professor of Natural History and the Environment at Arizona State University, and co-director of the Central Arizona Phoenix Long-Term Ecological Research site.
David R. Foster is an ecologist and director of the Harvard Forest at Harvard University, where he is a faculty member in the Department of Organismic and Evolutionary Biology and principal investigator for the Harvard Forest Long-Term Ecological Research site.