Richard Cincotta is consulting demographer to the Long Range Analysis Unit of the National Intelligence Council (NIC). His research focuses on the course of the demographic transition and on trends in human migration, and he has studied their relationships to natural resource dynamics, to human health, to regime type, and to the onset of civil conflict. His most recent findings on the relationship between demography and liberal democracy are outlined in an article in the March/April (2008) issue of Foreign Policy, and he contributed to the NIC’s global analysis, Global Trends 2025: A Transformed World (2009). Dr. Cincotta has more than 5 years of overseas field research experience, including projects in China, India, and Morocco, and another 6 years of overseas military and professional experience elsewhere.

David Coleman is Professor of Demography at Oxford University. Between 1985 and 1987 he worked for the British government, as the Special Adviser to the Home Secretary, and then to the Ministers of Housing and of the Environment. Research interests include the comparative demographic trends in the industrial world; the future of fertility, the demographic consequences of migration and the demography of ethnic minorities. International collaborative work continues on these topics at the Vienna Institute of Demography. He has worked as a consultant for the Home Office, for the United Nations and for private business. He has published over 100 papers and eight books including The State of Population Theory: Forward from Malthus (ed.with R.S. Schofield, 1986), The British Population: patterns, trends and processes (with J. Salt, 1992. Oxford University Press); International Migration: Regional Responses and Processes (ed. with M. Macura 1994); Europe's Population in the 1990s (ed. 1996, Oxford University Press), Ethnicity in the 1991 Census. Volume 1: Demographic characteristics of ethnic minority populations, edited (with J. Salt), London, HMSO and Immigration to Denmark: national and international perspectives (with E. Wadensjo, 1999, Aarhus University Press). He was the joint editor of the European Journal of Population (Paris) from 1992 to 2000 and in 1997 and in 2001 was elected to the Council of the International Union for the Scientific Study of Population. He is a Fellow of St. John's College and a lecturer at St. Catherine's College. He gives lectures and tutorials in demography to students in Human Sciences, PPE and other degrees and was Chairman of the Human Sciences Institute from 2005-2008.

Jack A. Goldstone (Ph.D. Harvard University) is Hazel Professor and Director of the Center for Global Policy at George Mason University, and a Scholar at the Mercatus Center. He is the author of Revolution and Rebellion in the Early Modern World (California 1981), and editor of The Encyclopedia of Political Revolutions (Congressional Quarterly 1998). He has received the Distinguished Contribution to Scholarship award of the American Sociological Association, the Arnoldo Momigliano Prize of the Historical Society, and fellowships from the ACLS and the MacArthur Foundation. He is currently working on two books: Why Europe?: The Rise of the West in World History and A Peculiar Path: The Rise of the West in Global Context 1500-1850.

Anne Goujon is a Research Scholar in the IIASA Population Program. Dr. Goujon received her PhD in social and economic science from the University of Vienna in 2003. From 1991 to 1994, she occupied several positions within the development community (UNESCO-Paris, UNICEF-New York, ECDPM-Maastricht, NGO ‘EquiLibre’-Iraq). Since 2002 she has also been a researcher at the Vienna Institute of Demography (Austrian Academy of Sciences). She is working mainly in the development of population and education projections. She has applied the methodology of multi-educational state population projections to several settings (North Africa, Middle East countries, the Yucatan Peninsula, thirteen World regions, Indian States).

Elliott Green is LSE Fellow in the Development Studies Institute, London School of Economics, where he teaches Complex Emergencies and African Development. He holds degrees from Princeton University (BA) and the London School of Economics (MSc, PhD). His research on ethnic politics and conflict in Uganda has been published in such journals as Commonwealth and Comparative Politics; Nations and Nationalism; Conflict, Security and Development and Perspectives on Politics.

Mark Haas is Assistant Professor of Political Science at Duquesne University. Dr. Haas' book, The Ideological Origins of Great Power Politics, 1789-1989, was published by Cornell University Press in 2005. His scholarly articles have appeared in International Security, International Organization, International Studies Quarterly, Security Studies, and The Review of Politics. His opinion and media pieces have been published in The Boston Globe, The International Tribune Review, The Washington Post, and The Pittsburgh Post-Gazette. Organizations that have supported Haas' research include the Olin Institute for Strategic Studies and the Belfer Center for Science and International Affairs (both at Harvard University), the Earhart Foundation, the Institute for the Study of World Politics, and Duquesne's Wimmer Foundation, Faculty Development Fund and Presidential Scholarships. Haas is currently writing books on the impact of Islamic Ideologies on American security and the effects of global population aging on the future of American power.

Richard Jackson is a senior fellow at CSIS, where he directs the Global Aging Initiative, a research program that explores the economic, social, and geopolitical implications of the aging population in the United States and around the world. He is also an adjunct fellow at the Hudson Institute and a senior adviser to the Concord Coalition. Jackson is the author of numerous policy studies, including The Graying of the Great Powers (CSIS, 2008), The Aging of Korea: Demographics and Retirement Policy in the Land of the Morning Calm (CSIS/MetLife, 2007); Long-Term Immigration Projection Methods: Current Practice and How to Improve It (CSIS, 2006); Building Human Capital in an Aging Mexico (CSIS, 2005); The Graying of the Middle Kingdom (CSIS/Prudential Financial, 2004); The CSIS Aging Vulnerability Index (CSIS/Watson Wyatt Worldwide, 2003); and The Global Retirement Crisis (CSIS/Citigroup, 2002). In 1994, he served as Blackstone Group chairman Peter G. Peterson’s liaison to the Kerrey-Danforth Commission on Entitlement and Tax Reform. From 1988 to 1992, he was a research fellow at the Hudson Institute, where he contributed to the path-breaking Workforce 2000 project. Jackson regularly speaks on long-term demographic and economic issues and is widely quoted in the national and international media. He holds a B.A. in classics from SUNY at Albany and a Ph.D. in economic history from Yale University.

Eric Kaufmann is Reader in Politics & Sociology at Birkbeck College, University of London. He is currently a Fellow in the Religion in International Affairs Program, Belfer Center, Kennedy School, Harvard. He is the author of The Rise and Fall of Anglo-America (Harvard, 2004), The Orange Order: A Contemporary Northern Irish History (Oxford 2007), co-author of Unionism and Orangeism in Northern Ireland Since 1945 (Manchester 2007) and editor of Rethinking Ethnicity: Majority Groups and Dominant Minorities (Routledge, 2004). He is also an editor of the journal Nations & Nationalism. He has written on religion and demography in academic journals as well as for Newsweek International and Prospect magazines and is currently writing a book on religious demography and world politics for Profile Books (London, 2009).

Elizabeth Leahy is a research associate at Population Action International, where she has worked since April 2004. Her areas of focus include the relationship between population dynamics and broader development issues, and global and country-level policy and funding trends in reproductive health supplies. She is the primary author of the 2007 PAI publication, The Shape of Things to Come: Why Age Structure Matters to a Safer, More Equitable World. Elizabeth has delivered presentations on her work to the American Public Health

Christian Leuprecht is Assistant professor in the Department of Political Science at the Royal Military College of Canada. He is also a Research Associate at the Institute for Intergovernmental Relations in the School of Policy Studies at Queen's University and a Fellow at the Queen's Centre for International Relations. His publications and research focus on political demography, liberal-democratic and constitutional governance and theory, ethnopolitical and internecine conflict and violence, military sociology, federalism and federal governance, with a particular interest in the study of politics and government in Canada, Germany, and small-island developing states. His most recent books include Canada: The State of the Federation. Municipal-Federal-Provincial Relations (with Robert Young; Montreal and Kingston: McGill-Queen's University Press, 2005) and Comparative Multilevel Governance (with Harvey Lazar; Kingston: McGill-Queen's University Press, 2006).

Ragnhild Nordås is an International Security Program Predoctoral Fellow for 2008–2009 in the Initiative on Religion in International Affairs. She is also a researcher at the Centre for the Study of Civil War at the International Peace Research Institute, Oslo (PRIO) and a Ph.D. candidate in Political Science at the Norwegian University of Science and Technology completing a dissertation on religion and civil conflict. Ragnhild is a member of the editorial committee of Journal of Peace Research, and her work has been published in International Studies Quarterly and Political Geography.

Jennifer Dabbs Sciubba is the Mellon Environmental Fellow in the Department of International Studies at Rhodes College. Her teaching and research examine the various security challenges and opportunities posed by trends in the environment, population, disease, and globalization. Dr. Sciubba has served as a Demographics Consultant in the Office of the Secretary of Defense in Arlington, VA, where she worked on population, environment, and energy issues. She has received training in demography from the Max Planck Institute for Demographic Research in Rostock, Germany and received her Ph.D. in Government and Politics from the University of Maryland, College Park. She is working on book about demography and the future of warfare and is researching the political effects of population aging in Germany, Italy, and Japan.

Vegard Skirbekk joined the World Population Program in October 2003 as a Research Scholar. He graduated in economics from the University of Oslo, Norway in 2000, and also studied at Adelaide University, Australia. In 2005 he was awarded his PhD at the University of Rostock, Germany. In 2000-2001 Dr. Skirbekk participated in the Advanced Studies Program in International Economics, held by the Institute for World Economics in Kiel, Germany. From 2001 to 2003 he worked at the Max Planck Institute for Demographic Research in Rostock, Germany. Dr. Skirbekk's research interests include identifying determinants of fertility, estimating productivity variation over the life cycle and conducting regional and national population projections, and he has published in leading journals including Science, Demography and Population and Development Review. He is the contact person for PLUREL at IIASA.

Monica Duffy Toft is an Associate Professor of Public Policy at the John F. Kennedy School of Government. Her research interests include international relations, nationalism and ethnic conflict, civil and interstate wars, the relationship between demography and national security, and military and strategic planning. Professor Toft is the author of The Geography of Ethnic Conflict: Identity, Interests, and Territory (Princeton University Press, 2003) and co-editor of The Fog of Peace: Strategic and Military Planning under Uncertainty (Routledge, 2006). Professor Toft is director of the Belfer Center's Initiative on Religion in International Affairs, which was established with a generous grant from the Henry Luce Foundation.

Henrik Urdal is Researcher, Centre for the Study of Civil War, International Peace Research Institute, Oslo (PRIO). He is Associate Editor of the Journal of Peace Research. Publications in, inter alia, International Studies Quarterly, Journal of Conflict Resolution, Journal of Peace Research, Political Geography, European Journal of Population. Urdal was co-editor of a special issue of the Journal of Peace Research on ‘The Demography of Conflict and Violence’ (2005), and of an edited volume on ‘The Demography of Armed Conflict’ (Springer, 2006). General research interests: Demography and domestic armed conflict; Climate change and conflict; Demographic consequences of armed conflict.(PRIO).