Since the dawn of civilization, humans have treasured youth and sought to find ways of subverting the inevitability of the aging process. There are innumerable myths and legends from cultures across the world which are centered around the notion that we might somehow be able to achieve some kind of eternal youth. There is something seemingly universally appealing about the notion that we might be able to wrest control of our fates from time’s unstoppable march. Of course, today we have a good grasp of the science of aging and, as a result, we have been able to devise a…