Professor of Systems Ecology, University of the Witwatersrand

Director, Woods Institute for the Environment, Stanford University

Executive Director, Global Carbon Project; and Chief Research Scientist, CSIRO

Professor, Dept. Environmental Sciences, University of Virginia

Professor of Geology and Geophysics, Yale University

Department of Earth System Science, UC Irvine

ETH Zurich

Senior Researcher, CICERO

PML

University of Tuscia