"I learned something new on almost every page of A World of Populations, despite having worked very closely in this field. The case studies herein are surprising and fascinating, offering new geographies and perspectives. This book has made me intrigued and curious about demography and world population all over again." · Alison Bashford, University of Cambridge, author of Global Population "Overall, this is a compelling, well-researched set of essays..[that] show us the nuanced, place-specific negotiations between international institutions and experts, national political entities, and local actors...Both the overall picture and the specific stories provided in this text are important contributions to the emerging literature on the history and social studies of demography and population policy." · Saul Halfon, Virginia Tech Demographic study and the idea of a "population" was developed and modified over the course of the twentieth century, mirroring the political, social, and cultural situations and aspirations of different societies. This growing field adapted itself to specific policy concerns and was therefore never apolitical, despite the protestations of practitioners that demography was "natural." Demographics were transformed into public policies that shaped family planning, population growth, medical practice, and environmental conservation. While covering a variety of regions and time periods, the essays in this book share an interest in the transnational dynamics of emerging demographic discourses and practices. Together, they present a global picture of the history of demographic knowledge. Heinrich Hartmann is Assistant Professor of History at the University of Basel, Switzerland. His book, Der Volkskörper bei der Musterung. Militärstatistik und Demographie in Europa vor dem Ersten Weltkrieg (Wallstein 2011) received the Henry E. Sigerist Award in 2012. His research focuses on the history of nineteenth and twentieth century demography in Europe and on the history of Turkish modernization in a transnational perspective. Corinna R. Unger is Associate Professor of Modern European History at Jacobs University Bremen. Her research focuses on European, North American, and international history of the twentieth century, with an emphasis on the history of knowledge, culture, and politics.