What killed Americans in 1776? The answer is dramatically different from today - Fox News
Video 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. The leading causes of death have changed dramatically since America's founding 250 years ago, highlighting how far medicine has come.