Professor of Physics, University of Houston

INFN sezione di Roma & CERN

Distinguished Professor of Health Physics and Diagnostic Sciences, University of Nevada …

Institute for the Study of Earth, Oceans, and Space, University of New Hampshire

University of Hawaii at Manoa

Texas A&M Regents Professor and Director - Prairie View A&M University

Georgetown University

Sr. Research Scientist, Johnson Space Center, NASA & U. of. Houston

Advacam

Macalester College