What's the secret of the oldest people? Why did their biological clocks slow down? To answer these and other questions, Science 2.0 and a team of Russian scientists travel around the world. In this episode, they study long-living Russians. The show's creators are joined by Russian scientists on a unique round-the-world expedition to study the questions of longevity. Their goal is to explore the territories where people live longer-than-average lives in order to draft a rulebook of a centenarian.

As life expectancy continues to soar, more and more of us are living to well over the age of 100. We ask some of the oldest people in the world the question everyone wants answered: what is the secret to long life?

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