Age Later: Health Span, Life Span, and the New Science of Longevity Immortality vs Aging Later For all our high-tech cities, complex financial products, and cutting edge medicine, humans have not managed to push back very much against the one certainty that awaits all of us - death. Though we live longer now than we did in the 1950s, much of this increase can be attributed to significant improvements in infant and youth mortality. In the 1950s, average life expectancy for the Western world...