Experts, practitioners, and academics around the world contributed to this volume.

Based on its antecedent, Global Public Goods: International Cooperation in
the 21st Century (Oxford University Press, 1999), this book explores the provision of global public goods. Responses to the first volume in large part shaped the theme and focus of the present volume.We are most grateful to our interlocutors for their valuable comments and suggestions.

Special thanks are due to Mark Malloch Brown, the Administrator of the
United Nations Development Programme (UNDP) for his support, personal
interest, and dynamic leadership throughout this project.And we thank Zéphirin
Diabré,Associate Administrator of UNDP, for his encouragement of our focus on the challenges of developing countries and the operationalization of the concept of global public goods.

We would also like to thank those who were kind enough to devote time and
effort to peer reviewing and commenting on parts of the manuscript: Arnab
Acharya, Nicola Acocella, Denis Aitken, Manuel Agosin, Yilmaz Akyüz, Diana
Alarcón, George A.O. Alleyne, Jens Christopher Andvig, Daniel G.Arce M.,Malik Amin Aslam, Scott Barrett, Robert Beaglehole, Keith Bezanson, Odile Blanchard, Kwesi Botchwey, Henk-Jan Brinkman, Thora Broughton, James M. Buchanan, the Canadian International Development Agency Global Public Goods Working Group, Richard Carson Jr., Margaret Catley-Carlson, William Cline, Anthony Clunies-Ross, Damien Conaré, Richard Cooper, John Cullis, Dana Dalrymple Aleta Domdom,Michael Doyle,Nick Drager, Björn Ekman,Guzin Erlat,Andreas Ershammar, Tim Evans, Hazem Fahmy, Jean-Claude Faure,Marco Ferroni, Cary Fowler, Irene Freudenschuss-Reichl, Eduardo Galvez, José Goldemberg, Leo Goldstone, Isabelle Grunberg, Joyeeta Gupta, Catherine Gwin, Peter Haas, David Hall, Paul Harris, Pamela Hartigan, Virginia Haufler, Geoffrey Heal, Eric Helleiner, Peter Heller, Carlsten Helm, Heather Hudson, Dean Jamison, Raghbendra Jha,Michael Johnston, Philip Jones, Ahmad Kamal, Geoffrey Lamb, John Langmore, Kelley Lee, François Lerin, Edward Luck, Carlos Massad, Jorg Mayer, Rohinton Medhora, Andrea Mogni, Ashoka Mody, Susanna Moorehead, Françoise Moreau, Ramón Moreno, Benito Müller, Peggy B.Musgrave,Richard A. Musgrave, Jane Nelson, Alan Nicol, Carin Norberg, Kwabena Osei-Danquah, Sheila Page, Charles Perrings, P. G. Ponnapa, John Quiggin, Jacques Martin, J. Mohan Rao, Sanjay Reddy, Carmen Revenga, Dani Rodrik, Bruce Russett, Francisco Sagasti, Todd Sandler, Serdar Sayan, Roger Sedjo, Alfredo Sfeir-Younis, Jason F. Shogren, Udo Simonis, Richard Smith, Eugene Smolensky, Paul Bernd Spahn, Janet Stotsky, Paul Streeten, Hannumappa Reddy Sudarshan, Lawrence Susskind, M.S. Swaminathan, Alexandre Taithe, Koy Thompson, Laurence Tubiana, Victor Venida, Ellen Wiegandt, John Williamson, Klaus Winkel, Ben White, Ngaire Woods, David Woodward, Oran Young, Christina Zarowsky, and Ian William Zartman.

Thanks also to our UNDP colleagues whose queries raised incisive issues and
whose comments improved the analysis: Ali Al-Zatari, Ingvar Andersson, Francis Blain, Chandrika Bahadur, Tim Boyle, Moez Doraid, Michele Falavigna, Sakiko Fukuda-Parr, Andrew Hudson, Selim Jahan, Bruce Jenks, Thomas B. Johansson, Mumtaz Keklik, Kamal Malhotra, Brenda McSweeney, Saraswathi Menon, John Ohiorhenuan, Maxine Olson, Seeta Prabhu, Ramaswamy Sudarshan, Mark Suzman, Emma Torres, Håkan Tropp,Antonio Vigilante, and Mourad Wahba.We also thank Anne-Birgitte Albrectsen (Office of the Administrator), Normand Lauzon (United Nations Capital Development Fund), and the heads of UNDP's regional bureaus and their teams: Abdoullie Janneh (Africa), Rima Khalaf Hunaidi (Arab States), Elena Martínez (Latin America and the Caribbean), Kalman Mizsei (Europe and the Commonwealth of Independent States), and Hafiz Pasha (Asia and the Pacific).

We are grateful to the members of our Advisory Board for their guidance and
advice during the two years of shaping and compiling this publication. We also
thank delegates of the Permanent Missions to the United Nations for their support throughout this endeavor.

We benefited from the generous financial support of the Governments of
Austria, Canada (through the International Development Research Center),
France, Sweden, Switzerland, The Netherlands, and the United Kingdom.
Additional support was provided by the MacArthur Foundation and the
Rockefeller Foundation.

Nonetheless, the views expressed in this volume are those of the authors and
do not necessarily reflect those of UNDP or of other institutions with which they are affiliated.

We are indebted to Masha Beliaeva, Vikas Nath, Grace Ryu (who also managed
the book production process), and Mirjam Schnupf for valuable research
assistance. We also acknowledge former Office of Development Studies team
members Thorsten Benner, Kevin Morrison,Marc A. Stern, and Jan Martin Witte for their dedicated work on the project during its inception. Furthermore, we thank our interns Fiorella Aller, Edda Costarelli, Dan Bennett, Erik Eldhagen,
Michael Faust, Yonita Grigovova, Maki Kobayashi, Asli Kubilay, Sarah Mulley,
Kirsten Neumann, Frederic Nikiema, Daria Oziashvili, Maria Elena Pérez,
Jonathan Rose, Klaus Stubkjaer Andersen, Achille Toto Same, and Mizuho Yokoi.

Our appreciation also goes out to Paul Donnelly and Stephen McGroarty of
Oxford University Press for their help, Gerald Quinn for design, and Bruce Ross-Larson, Meta de Coquereaumont, Paul Holtz, Alison Strong, and Kim Bieler of Communications Development Incorporated for editing and production of the volume.

Finally,we are grateful to Flora Aller, Rocio Kattis, and Zipora Vainberg-Rogg
for their valuable administrative support.