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Predicting Life Expectancy If you could know how long you will live, would you want the answer? New scientific technology is making the task of predicting a person's life expectancy more possible and more accurate.

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Predicting Life Expectancy

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Predicting Life Expectancy

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If you could know how long you will live, would you want the answer? New scientific technology is making the task of predicting a person's life expectancy more possible and more accurate. Ronald Bailey, science correspondent at Reason magazine, talks with Alex Chadwick.