· President & CEO, California Foundation on the Environment and the Economy2018–
· CEO, Physicians for a Healthy California2017–2018
· Senior Executives in State & Local Government, Harvard Kennedy School2015–
· School Board Member, Sacramento City Unified School District2012–2018
· Chief Strategy Officer, California Medical Association2010–2018
· Professor of Electrical & Computer Engineering, The University of Texas at Dallas2005–
· Professor Emeritus, Colorado State University2002–
· Trustee, NORC at the University of Chicago2002–
· Legislative & Political Director, State Building and Construction Trades Council, AFL-CIO2000–2010
· Special Assistant to the Speaker, California Assembly Speaker1993–2000
· Alan A. Stone Professor of Law, Harvard Law School1992–
· J.D., Yale Law School1990–
· Ph.D. in Electrical Engineering, Georgia Institute of Technology1988–
· B.A. Economics and Public Policy, Rice University1986–
· M.S. in Electrical Engineering, Georgia Institute of Technology1983–
· B.S.E.E. degree, Rutgers University1982–
· Director, NASA Goddard Institute for Space Studies1981–2013
· Ph.D. in Anatomy, Tulane University1974–
· Ph.D. in History, University of Denver1969–
· Professor, Colorado State University1968–2001
· Ph.D. in Physics, University of Iowa1967–
· M.A. in History, University of Denver1965–
· M.S. in Astronomy, University of Iowa1965–
· B.A. in Physics and Mathematics, University of Iowa1963–
· B.A. in History, Middlebury College1960–
· B.A. degree, Beloit College
· Board Member, California Tahoe Conservancy
· Adjunct Professor, Columbia University
· MS in Computer Science, Creighton University
· Senior Lecturer on Social Studies, Harvard University
· Bachelors in Psychology, Occidental College
· Professor, SUNY Brockport
· Charles L. Hutchinson Distinguished Service Professor, University of Chicago
· Chairman of the Department of Speech, Language and Hearing Sciences, University of Colorado at Boulder
· BA, University of Kansas
· Professor of Neurobiology and Anatomy, University of Rochester School of Medicine and Dentistry
· Masters in Public Administration, University of Southern California
· Professor, University of Wyoming
· MPhil, Yale University
· PhD Student, Yale University