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

Professor of Biology, Harvard University

University of Southern Denmark

Distinguished Professor of Biogeochemistry, UC Riverside

California Institute of Technology

Yale University

Biology & Biological Engineering and Geological & Planetary Sciences, Caltech

Professor of Geochemistry, University of Maryland

Japan Agency for Marine-Earth Science & Technology

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