Longevity researcher shares secrets of the world’s ‘blue zones’ Dan Buettner, an American author, explorer and longevity researcher who first coined the term "blue zone," embarked on a mission to find out how people are living to 100 in certain parts of the world. NEW You can now listen to Fox News articles! Humans are already living longer than in past generations, according to global statistics. In the U.S., life expectancy rose to 79 years in 2024, marking an all-time high, according to CDC