So do other people in various spots around the world—in Blue Zones, so named by National Geographic Fellow Dan Buettner for the blue ink that outlines these special areas on maps developed over more than a decade. (National Geographic News is part of the National Geographic Society.)

In his second edition of his book The Blue Zones, Buettner writes about a newly identified Blue Zone: the Greek island of Ikaria (map). National Geographic magazine Editor at Large Cathy Newman interviewed him about the art of living long and well. (Watch Buettner talk about how to live to a hundred.)

A. Michel Poulain, a demographer on the project, and I are always on the lookout for new Blue Zones.