Ideas | Jun 24, 2013 | 53:59

The Longevity Puzzle (Encore Jan 2, 2013)

In a cluster of quiet mountain villages in Sardinia, Italy, something unusual is happening. A remarkable number of people are living into their hundreds. And in this global hotspot for longevity, there are nearly as many male as female centenarians. Susan Pinker takes us to the Blue Zone of Sardinia as she searches for the answers to - Why?

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