Stephen Mojzsis is an Associate Professor of Geosciences at the
University of Colorado, and a Member of the NASA Astrobiolgy
Institute.  His research interests include:  Archean biogeochemistry;
constraining Hadean/Archean surface states from the geochemical record;
stable and radiogenic isotope geology; origin and evolution of life;
surface chemistry and materials characterization; chemistry of
phosphates, carbonates, sulfides, graphite and zircon; Platinum Group
element geochemistry; mineralogy of martian meteorites;
serpentinization and Fischer-Tropsch reactions; arid land geomorphology
and paleohydrology.