Joel E. Cohen is Abby Rockefeller Mauzé Professor of Populations at Rockefeller University and Professor of Populations at Columbia University.

David E. Bloom is Clarence James Gamble Professor of Economics and Demography and Chair of the Department of Population and International Health at the Harvard University School of Public Health.

Martin B. Malin is Director of the Program on Science and Global Security at the American Academy of Arts and Sciences.