<p><p>The future of Social Security is troubled, both in the United States and in most other developed countries with aging populations. As improvements in health care and changes in life styles enable retirees to live longer than ever before, the stress on national budgets will increase substantially. In Social Security Programs and Retirement around the World, Jonathan Gruber, David A. Wise, and experts in many countries examine the consequences of reforming retirement benefits in a dozen nations.</p></p>