Jeffrey D. Sachs, Director of the Center for Sustainable Development at Columbia University, and Felipe Larraín, Professor at Universidad Católica and Chile's former Minister of Finance, discuss how challenges and opportunities of the 21st century can be met. The discussion, moderated by Karen Poniachik, is based upon Sachs’ latest book, “The Ages of Globalization”, which examines world history to shed light on how today’s urgent, global issues require concerted, planet-wide action.