Professor of Geomicrobiology (2007 - present) 
Department of Earth and Atmospheric Sciences

University of Alberta 

Canada Research Chair in Geomicrobiology (2002 - 2007) 
Department of Earth and Atmospheric Sciences

University of Alberta 
   
Lecturer in Environmental Geochemistry (1994 - 2002) 
School of Earth Sciences

University of Leeds 
 
Visiting Professor of Geomicrobiology (Autumn 1998) 
Department of Geosciences

Pennsylvania State University

Postdoctoral Fellow (1994) 
Department of Geology, University of Toronto 
Supervisor: Dr. Grant Ferris, FRSC

Postdoctoral Fellow (1993)
Department of Earth Sciences, University of Western Ontario
Supervisor: Dr. Fred Longstaffe, FRSC    
                                    
PhD, Earth Sciences (1989 - 1993)
University of Western Ontario 
Thesis: Multiple fluxes influencing Amazonian river chemistry 
Supervisor: Dr. William S. Fyfe, FRS
    
BSc, Honours Geology (1985 - 1989) 
University of Toronto 
Honours Thesis: Geological implications of tropical deforestation 
Supervisor: Dr. Judith G. Patterson