Severe storms moving across southern, central Minnesota

In his new documentary, director Mark Wexler embarks on a worldwide trek to investigate just what it means to grow old and what it could mean to really live forever. But whose advice should he take? Does 94-year-old exercise guru Jack LaLanne have all the answers, or does Buster, a 101-year-old chain-smoking, beer-drinking marathoner?

Mobile technology is creating new tools, tests and apps that enable patients to get diagnostic information through their smart phones. But what will this mean for the doctor-patient relationship?

How to live forever

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