What Darwin Didn't Know: The Modern Science of Evolution

The Evolution of Aging and Death (1x21)

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Darwin's writings seem to imply that evolution through natural selection should always favor longer lifespans. So why don't we live forever (or at least for several centuries)? Consider ways that evolutionary processes account for aging and death. Weigh factors such as accumulated mutations, programmed cell death, and genes whose multiple effects are antagonistically at odds with one another.