Interesting opinion piece over at MSNBC by Dr. Arthur Caplan.

As the science of regenerative medicine using stem cells inches forward, as more is understood about how lifestyle influences longevity, as organ and tissue transplants become routine and as geneticists begin to unravel the secrets of why we age, the prospect of living forever — or at least until the Cubs win a pennant — makes the question something more than an exercise in science fiction.

http://www.msnbc.msn.com/id/23562623/