Scott Barrett is Professor and Director of International Policy at the School of Advanced International Studies, Johns Hopkins University. He was previously an advisor to the International Task Force on Global Public Goods, and drew upon his work for the Task Force in preparing this book. He wrote the book while on sabbatical as a Distinguished Visiting Fellow at the Yale Center for the Study of Globalization, Yale University. His previous book, Environment and Statecraft, was published by OUP in paperback in 2005.