Biological Age

In Part Three of Immortality: A User's Guide: why do we age in the first place? And was Steve Jobs correct that death is "life's change agent"?

Could a few promising experiments extending the lives of worms augur a paradigm shift in our understanding of human aging? And potentially open up the possibility of radical life extension? On their own, of course, a handful of studies on long-living worms do not constitute a paradigm shift. But as is so often the case in the history of science, the wor…