ALESSANDRO VERCELLI is Full Professor of Economics at the University of Siena, Italy. He is Vice President of the Executive Committee of the International Economic Association. He is author and editor of several books and articles in the fields of economic policy, economic methodology, cycle theory and environmental economics. SIMONE BORGHESI is Assistant Professor at the University of Pescara, Italy. He has worked at the International Monetary Fund, Washington, and at the Fondazione ENI Enrico Mattei, Milan. He is author of several articles in the fields of international, development and environmental economics.