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Area of Science:

  • Earth System Science
  • Global Ecology
  • Thermodynamics

Background:

  • The Gaia hypothesis, originating in the 1960s, is now integrated into global ecology and Earth system sciences.
  • The interdependence of Earth's spheres (biosphere, oceans, atmosphere, geosphere) is scientifically established.
  • The theoretical underpinnings of Earth's holistic homeostasis remain underexplored.

Purpose of the Study:

  • To examine the foundational theory of Gaia hypothesis.
  • To connect Gaia theory with the 2nd law of thermodynamics.
  • To elucidate the thermodynamic imperatives driving Earth's homeostatic mechanisms.

Main Methods:

  • Analysis of Gaia theory through the lens of the 2nd law of thermodynamics.
  • Viewing all species and processes as energy transduction mechanisms.
  • Examining the evolution of the global system towards a stationary state.

Main Results:

  • All natural processes, animate and inanimate, consume free energy, a thermodynamic driving force.
  • The global system evolves towards a stationary state, characterized by maximum entropy and stability.
  • Earth's homeostatic system actively readjusts energy flows to maintain stability against environmental changes.

Conclusions:

  • Gaia theory's propositions are thermodynamic imperatives.
  • Holistic understanding of the global system is a consequence of thermodynamic laws.
  • Earth's homeostatic capacity is explained by the principle of increasing entropy.