National Geographic Explorer and NY Times best selling author Dan Buettner is the founder of Blue Zones, an organization that helps Americans live longer, healthier lives. He talks with Tonia about his new book, The Blue Zones Kitchen, and how his travels to blue zones not only discovered the traditional diets that yield the world's longest-living people, but how this way of eating can strengthen our immune system to live a long life. He also shares a delicious Sardinian Minestrone recipe.