Conference Program: Pre-conference Workshop in cooperation with ICABR "The Green Revolution in Africa" - First Session Alexander Sarris "Food Security in Africa" - Second Session Luigi Mennella "Which perspective for Africa: Economic and Social Dimensions", Giovanni Andrea Cornia "The African Growth Dilemma. Demographic, Growth, Inequality and Migrations" - Third Session Michael Toman "Energy and Economic Development", - Fourth Session Jaime De Melo "Trade, Migrations and Development".