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Medea hypothesis

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Peter ward the medea hypothesis


The Medea hypothesis is a term coined by paleontologist Peter Ward for the anti-Gaian hypothesis that multicellular life, understood as a superorganism, is suicidal; in this view, microbial-triggered mass extinctions are attempts to return the Earth to the microbial-dominated state it has been for most of its history. It is named after the mythological Medea, who killed her own children. Medea represents the Earth, and her children are multicellular life.

Contents

Past "suicide attempts" include:

  • Methane poisoning, 3.5 billion years ago
  • The oxygen catastrophe, 2.7 billion years ago
  • Snowball earth, twice, 2.3 billion years ago and 790–630 million years ago
  • At least five putative hydrogen sulfide-induced mass extinctions, such as the Great Dying, 252.28 million years ago
  • The list does not include the Cretaceous–Paleogene extinction event, since this was, at least partially, externally induced by a meteor impact.

    The medea hypothesis is life on earth ultimately self destructive


    References

    Medea hypothesis Wikipedia