People have always been obsessed with getting old, or rather staying young, and now science is catching up. Longevity has become a hot topic from university labs to Silicon Valley startups. In the second of a special Science Weekly three-part mini-series on aging, Ian Sample talks to Venki Ramakrishnan, winner of the Nobel Prize in Chemistry and author of the book Why We Die. Venki outlines the most promising scientific advances in the field of longevity and discusses the more unusual ways the wealthy are trying to extend their lives, from blood transfusions to cryonics
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