David A. Hamburg, M.D., is DeWitt Wallace Distinguished Scholar at Weill Cornell Medical College. He was President of the Carnegie Corporation of New York from 1982 to 1997. He has been Professor at Stanford University and Harvard University, President of the Institute of Medicine, National Academy of Sciences, and President of the American Association for the Advancement of Science. Among his many publications are "Today's Children" (1992), "No More Killing Fields" (2002), and "Learning to Live Together" (2004). Dr. Hamburg was a member of President Clinton's Defense Policy Board and the Pres...