Long for This World: The Strange Science of Immortality

In the twentieth century alone, the human life expectancy has increased by more than thirty years. Some scientists believe that it's time for the next big leap—this time into complete immortality. Today on Focus, science writer Jonathan Weiner joins the show to explain some of the science behind this heart-pounding research and the dramatic tale of how aging may be conquered once and for all—even in this lifetime.

Guest: Jonathan Weiner (Maxwell M. Geffen Professor of Medical and Scientific Journalism, Graduate School of Journalism, Columbia University; author of Long for This World: The Strange Science of Immortality)