Professor of Geochemistry, Macquarie University

Distinguished John S. Toll Professor of Geosciences, Stony Brook University

Professor, University of Maryland and Tohoku University

Professor of Geology and Geophysics, Yale University

Cardiff University

Professor at Collège de France, CEREGE, Aix Marseille Univ, CNRS, IRD, INRA

department of earth sciences, cambridge university

Distinguished Research Professor of Geochemistry, University of California, Los Angeles

Professor of Geology, Macquarie University

ASU