He is a Visiting Presidential Professor at The Graduate Center, City University of New York, and a Senior Scholar at the Stone Center on Socio-economic Inequality. He served as lead economist in the World Bank’s Research Department for almost 20 years. His main area of work is income inequality, in individual countries and globally, also in pre-industrial societies. His book The Haves and the Have-nots: A Brief and Idiosyncratic History of Global Inequality, Basic Books (2011) was selected by The Globalist as the 2011 Book of the Year. Global Inequality: A New Approach for the Age of Globalization, Harvard University Press (2016), was awarded the Bruno Kreisky Prize. In 2017 he was awarded the 2018 Leontief Prize 2018 for advancing the frontiers of economic knowledge, jointly with Mariana Mazzucato. His latest book in Italian is Capitalismo contro capitalismo, Laterza, 2020.