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The Human Ecology of Overshoot: Why a Major ‘Population Correction’ Is Inevitable

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  • William E. Rees

    (School of Community and Regional Planning, Faculty of Applied Science, The University of British Columbia, Vancouver, BC V6T 1Z2, Canada)

Abstract

Homo sapiens has evolved to reproduce exponentially, expand geographically, and consume all available resources. For most of humanity’s evolutionary history, such expansionist tendencies have been countered by negative feedback. However, the scientific revolution and the use of fossil fuels reduced many forms of negative feedback, enabling us to realize our full potential for exponential growth. This natural capacity is being reinforced by growth-oriented neoliberal economics—nurture complements nature. Problem: the human enterprise is a ‘dissipative structure’ and sub-system of the ecosphere—it can grow and maintain itself only by consuming and dissipating available energy and resources extracted from its host system, the ecosphere, and discharging waste back into its host. The population increase from one to eight billion, and >100-fold expansion of real GWP in just two centuries on a finite planet, has thus propelled modern techno-industrial society into a state of advanced overshoot. We are consuming and polluting the biophysical basis of our own existence. Climate change is the best-known symptom of overshoot, but mainstream ‘solutions’ will actually accelerate climate disruption and worsen overshoot. Humanity is exhibiting the characteristic dynamics of a one-off population boom–bust cycle. The global economy will inevitably contract and humanity will suffer a major population ‘correction’ in this century.

Suggested Citation

  • William E. Rees, 2023. "The Human Ecology of Overshoot: Why a Major ‘Population Correction’ Is Inevitable," World, MDPI, vol. 4(3), pages 1-19, August.
    • Handle: RePEc:gam:jworld:v:4:y:2023:i:3:p:32-527:d:1215647
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    References listed on IDEAS

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