Fri, Aug 3, 2007 -- 8:33 AM

Quest for Longevity
Quest for Longevity -- Over the past few decades our life spans have increased, primarily due to technology and the ability to fight diseases. The program looks at efforts under way to help humans live even longer and healthier lives of 100 years or more. What is the latest medical research on aging and what are the social implications of living longer?

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