Biologist Steven Austad is so confident human beings will soon live to be 150 years old that he’s bet on it with a colleague. Austad tells Steve Paulson about the wager and why he was willing to make it. Also, Austad’s bet is with University of Illinois bio-demographer Jay Olshansky, who tells Anne Strainchamps that people should be happy they achieve old age — we’re already living way past our expiration date! Olshansky is the co-author (with Bruce Carnes) of “The Quest for Immortality: Science at the Frontiers of Aging.”