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A New History of LifePondering how the great antiquity of Earth is discovered; the observations that lead to the concept of deep time; in the process, they develop the tools that can read the story in rocks; ending with an analogy that puts human time into perspective.

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Now PlayingA New History of LifePondering how the great antiquity of Earth is discovered; the observations that lead to the concept of deep time; in the process, they develop the tools that can read the story in rocks; ending with an analogy that puts human time into perspective.0A New History of LifeDelving into biostratigraphy, the study of fossil sequences in rock strata; its discovery solves the problem of correlating sedimentary strata from different regions; this leads to the geological time scale, initiating a revolution in Earth science.