Will you live to be 120 or 150 in this lifetime? The notion of longevity and immortality has been with us since the Bible. Yet aside from a single person, modern science has yet to prove the existence of a human being over the age of 120.Jay Olshansky and Bruce Carnes reveal how the process of aging is a continuum, and because each of us is unique, no number can express how each of us ages. Combating infectious diseases and saving the young has been the 20th century's fundamental contribution to longevity. Today, explore how everything from your genes to your diet plays a role in your lifespan.