Terry Gross

He is a professor of Economics and International Affairs at Princeton University. His research is mainly in the areas of international trade and finance. He is one of the founders of an economic postulation called the "new trade theory." Krugman has also written and edited many books. His most recent is Fuzzy Math, on the Bush tax cut.

He is a senior fellow at the National Center for Policy Analysis. His twice-weekly column on economic policy is published in The Washington Times and Detroit News and is nationally syndicated. He was deputy assistant secretary for economic policy at the U.S. Treasury Department, from September 1988 to January 1993. In 1987 and 1988, Bartlett was a senior policy analyst in the Office of Policy Development at the White House. Before that, he was a senior fellow at the Heritage Foundation in Washington, D.C.

The United Nations Special Envoy for HIV/AIDS in Africa talks about the current state of the AIDS crisis there. He recently returned from a tour of Lesotho, Zimbabwe, Malawi and Zambia, where he was investigating links between hunger and AIDS. He is the former Deputy Executive Director of UNICEF and was the Canadian ambassador to the U.N. from 1984-1988.