University of Arizona, Department of Geosciences

Professor Emeritus of Resource Ecology, Wageningen University (the Netherlands)

Professor of Earth Science

Centre de recherches Pétrographiques et Géochimiques - CRPG CNRS-Université de …

Professor Université de Lorraine - Centre de Recherches Pétrographiques et Géochimiques …

Professor of Geology, School of Earth Sciences and Engineering, Nanjing Unviersity

Virginia Tech

Professor in Geology, Dalhousie University (Halifax, Canada)

Professor of Biogeography, University in Bergen

French IRD (National Research for Sustainable Developpement)