Introduction / Peter Uhlenberg -- Pt I. Overview. 1. Why populations age / Joshua Goldstein -- 2. Data sources for studying aging / Markus H. Schafer & Kenneth F. Ferraro -- 3. Global Population Aging: History and Prospects / Donald T. Rowland -- Pt II. Aging Populations. 4. Population Ageing in Italy and Southern Europe / Cecilia Tomassini & Giovanni Lamura -- 5. Demography of Aging in the Nordic Countries / Gerdt Sundstrom -- 6. Rapidly Aging Populations: Russia/Eastern Europe / Natalia Gavrilova & Leonid A. Gavrilov -- 7. Rapid Population Aging and Changing Intergenerational Transfers in Japan / Naohiro Ogawa, Rikiya Matsukura & Maliki -- 8. Population Aging in China / Feinian Chen & Guangya Liu -- 9. Population Aging in the Koreas / Dudley L. Poston, Jr. and Mary Ann Davis --10. Population Aging in Canada and the United States / Tracey LaPierre & Mary Elizabeth Hughes -- 11. Aging in Mexico and Latin America / Rebeca Wong & Alberto Palloni -- 12. Aging in West Africa / Isabella Aboderin -- 13. Demography of Aging in Arab Countries / Kathryn M. Yount & Abla Sibai -- Pt III. Migration and Aging. 14. Geographic Mobility and Aging in Place / Don E. Bradley & Charles F. Longino -- 15. International Retirement Migration / Tony (A.M.) Warnes -- 16. Immigrants and Aging /Judith Treas & Jeane Batalova -- 17. Replacement Migration / Charles B. Keely -- Pt IV. Population Aging and Economic Issues. 18. Public pension programs Social Security / Diane M. Watts-Roy & John B. William