What if we didn’t have to grow old and die? The average American can expect to live for 78.8 years, an improvement over the days before clean water and vaccines, but it's still not long enough for most of us. So researchers around the world have been working on arresting the process of aging through biotechnology. What are the ethical and social consequences of radically increasing lifespans? Should we accept a “natural” end, or should we find a cure to aging?

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