DAN BUETTNER is the founder of Blue Zones, an organization that helps Americans live longer, healthier lives. His groundbreaking work on longevity led to his 2005 National Geographic cover story "Secrets of Living Longer" and a second, "The Search for Happiness," in 2017. Buettner has authored three national bestsellers: The Blue Zones, Thrive, and The Blue Zones Solution. He is also the author of The Blue Zones of Happiness (2017) and is a National Geographic Explorer.