Making it to 90 years old is awe-inspiring in much of the world. But on a tiny Greek island in the North Aegean Sea, nonagenarians barely merit a second glance.
The island of Icaria could be the newest of the world's so-called blue zones — places where residents have unusually long life spans.
Dan Buettner has crossed the globe many times over the years in search of blue zones, and he recently teamed up with AARP and National Geographic to study Icaria.
