Professor of Earth Science & Biological Sciences, University of Southern California

Professor of Biology, Harvard University

University of Southern Denmark

California Institute of Technology

Distinguished Professor of Biogeochemistry, UC Riverside

Yale University

Professor of Geochemistry, University of Maryland

Professor of Earth Sciences, University of Southern California

Japan Agency for Marine-Earth Science & Technology

Professor, University of Bremen, MARUM & Dept. of Geosciences, formerly WHOI