People have always been obsessed with getting old, or rather staying young, but now science is catching up. Longevity has become a hot topic, from university labs to Silicon Valley startups. In the first of a Science Weekly three-part mini-series on ageing, Ian Sample talks to Richard Faragher, a professor of biogerontology at the University of Brighton, to discover what we know about the biological features of aging in our bodies – and why we evolve to have the lifespan we have
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