On today's ST, a detailed discussion of the currency problems affecting certain European countries --- namely, Greece, Spain, Portugal, and Ireland. We welcome to our show Dr. Stanley Black of the University of North Carolina, Chapel Hill. He's a highly respected economics professor who's also taught courses at Princeton, Vanderbilt, Yale, the Institute of International Economics in Stockholm, the University of Siena in Italy, the Brookings Institution, the International Monetary Fund, and the Free University in Berlin. He's also held several notable government positions, including stints with the President's Council of Economic Advisers, the Federal Reserve Board, and the Department of State. Dr. Black gave an address last week (on the 18th) at the Tulsa Committee on Foreign Relations entitled "The Eurozone Crisis," and we recorded a discussion with him on this topic while he was visiting our city. You can learn more about Dr. Black's academic work here, and more about his recent appearance in Tulsa at this link.