Laura Carstensen is the director of the Stanford Center on Longevity, and has extensively studied the effects on wellbeing of extended lifetimes.
Why you should listen
Dr. Carstensen is Professor of Psychology and Public Policy at Stanford University, where she is the founding director of the Stanford Center on Longevity, which explores innovative ways to solve the problems of people over 50 and improve the well-being of people of all ages. She is best known in academia for socioemotional selectivity theory, a life-span theory of motivation. She is also the author of A Long Bright Future: An Action Plan for a Lifetime of Happiness, Health, and Financial Security
— an updated edition will be released in 2011.