Many of today’s most urgent problems are fundamentally global. They require a concerted, planet-wide action if we are to secure a long-term future. But humanity’s story has always been told on a global as well as a local scale. In his new book, The Ages of Globalization, Jeffrey D. Sachs, renowned Columbia University economist and expert on sustainable development, turns to world history to shed light on how we can meet the challenges and opportunities of the 21st century. Registration closes at 5:00 pm ET.