The term 'Blue Zones' gained popular attention through author and National Geographic fellow Dan Buettner. Along with a team of scientists, including Gianni Pes and Michel Poulain, who originally coined the phrase, Buettner set out to identify key longevity hotspots around the world.
Their mission was to uncover the secrets behind the long lives of these communities' inhabitants. In this photo, Buettner is seen with Juan Carillo, an exceptionally youthful 86-year-old from Nicoya, Costa Rica.
His research, published in his Blue Zones book series, inspired the Netflix documentary Live to 100: Secrets of the Blue Zones. It has caused a storm in the longevity industry, which, according to the Allied Market Research group, will be worth over £44 billion ($34bn) by 2030.