EDUCATION PhD Soil Physics, Department of Soil, Water and Climate, University of Minnesota (2005)MSGeochemistry, Dept. of Geology, Northern Illinois University, DeKalb, Illinois (1998) BS Chemistry and Physics, Lewis University, Romeoville, Illinois (1992)POSITIONS HELD2007 – Present USDA-ARS St. Paul, MN (Research Soil Scientist)2005-2007 USDA-ARS Morris, MN (Post-doc) 1996-2001 Argonne National Laboratory (Environmental Research Division)1989-1996 Argonne National Laboratory (Energy Systems Division)