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Researchers in the lab of Walter Fontana, Harvard Medical School professor of systems biology, have found a surprising statistical regularity in how a variety of genetic and environmental factors affect the life span of the C. elegans worm. Their findings suggest that aging does not have a single discrete molecular cause but is rather a systemic process involving many components within a complex biological network. Perturb any node in the system, and you affect the whole thing.

In this video, the researchers discuss their findings and the Lifespan Machine.