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Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
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Defining the anthropocene.

Simon L Lewis1, Mark A Maslin2

  • 11] Department of Geography, University College London, Gower Street, London, WC1E 6BT, UK [2] School of Geography, University of Leeds, Leeds, LS2 9JT, UK.

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|March 13, 2015
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This summary is machine-generated.

The Anthropocene, a proposed new geological epoch defined by human impact, may have begun in either 1610 or 1964. Evidence of human signatures in Earth's geological record supports these potential start dates for this significant environmental era.

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Area of Science:

  • Earth Science
  • Geology
  • Environmental Science

Background:

  • Geological time is historically demarcated by significant shifts in Earth's state.
  • Global environmental changes prompt consideration of a new human-dominated epoch: the Anthropocene.

Observation:

  • Anthropogenic signatures in the geological record are assessed against formal criteria for epoch recognition.
  • The historical development of the Anthropocene concept is reviewed.

Findings:

  • Evidence suggests two potential start dates for the Anthropocene Epoch: 1610 and 1964.
  • These dates align with criteria for formally recognizing a new geological epoch.

Implications:

  • Formal establishment of the Anthropocene Epoch signifies a profound alteration in the human-Earth system relationship.
  • This recognition impacts our understanding of geological time and human environmental influence.