Doug meets Robert C. Merton, winner of the Nobel Prize for Economics in 1997 and professor of finance at the MIT Sloan School of Management. Professor Merton explains how a longer average lifespan has affected retirement planning and what you need to do to plan for your old age today. "Goldstein on Gelt" is a global investment and financial planning radio show designed to educate and entertain its listeners with financial strategies and investment tips. Investment advisor Douglas Goldstein hosts the weekly show and is the director of Profile Investment Services, Ltd., www.profile-financial.com.