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    At 194, a 450-Pound Tortoise Is the Oldest Living Land Animal, and its DNA May Help Explain Why

    Discover Magazine
    October 7, 2026
    via Discover Magazine

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    At 194, a 450-Pound Tortoise Is the Oldest Living Land Animal, and its DNA May Help Explain Why

    Learn how a sample from the tortoise Jonathan’s mouth revealed youthful patterns in his gene regulators that may help explain his nearly two-century lifespan.

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