Many medical authorities predict that average life expectancy could well exceed 100 years by mid 21st century and rise even higher soon thereafter. This prospect, brought on by the revolution in molecular biology and information technology, confronts policymakers and public health officials with a host of new questions: how will increased longevity affect demographic trends, government taxation and spending, the workplace and health care? What ethical and quality-of-life issues are raised by these new breakthroughs? This title explores these questions as practicing scientists and public policy experts come together to address the technical aspects and policy implications of increased longevity. The book is intended to begin a discussion in political, social and medical circles that will serve to prepare us for the extraordinary possibilities that may await us.