Aging is inevitable. We can slow it down a little, but could we ever bring it to a grinding halt? In this episode, TED speakers explore how we all might live longer and even better lives. Guests include writer and explorer Dan Buettner, anti-aging advocate Aubrey de Grey, biochemist Cynthia Kenyon, medical ethicist Harvey Fineberg, and author Isabel Allende. (Original broadcast date: May 22, 2015).