Jeffrey Sachs, world-renowned for his work around the globe advising economies in crisis, here draws on his twenty-five years of expertise to offer a uniquely informed vision of the keys to economic success in the world today and the steps that are necessary to achieve prosperity for all.Sachs lays out a clear conceptual map of the world economy. He leads readers along the same learning path he himself followed, telling the stories of his own work in countries from Bolivia to Africa, bringing to listeners a deep understanding of the challenges faced by developing countries in different parts of the world. Finally, he offers solutions to the interwoven economic, political, environmental, and social problems that challenge the world’s poorest societies and, indeed, the world itself.