School of Earth and Space Exploration & School of Molecular Sciences, Arizona State …

NASA Ames Research Center

Distinguished Professor of Geology and Geochemistry, University of New Mexico

Research Professor, Department of Earth, Environmental & Planetary Sciences, Washington …

Space Science & Technology Centre, Curtin University

Research Geochemist, Department of Earth, Planetary, and Space Sciences, UCLA

Planetary Scientist, NASA Johnson Space Center

Professor, University of California at Davis

Researcher at University of Hawaii

Natural History Museum