The Gaia hypothesis, also known as the Gaia theory, Gaia paradigm, or the Gaia principle, proposes that living organisms interact with their inorganic surroundings on Earth to form a synergistic and s
The study of planetary habitability is partly based upon extrapolation from knowledge of the Earth's conditions, as the Earth is the only planet currently known to harbour life (The Blue Marble, 1972 Apollo 17 photograph).
Levels of gases in the atmosphere in 420,000 years of ice core data from Vostok, Antarctica research station. Current period is at the left.
Earthrise taken from Apollo 8 by astronaut William Anders, December 24, 1968
Teleology or finality is a philosophical approach to discussing causality that explains causes in terms of ends, purposes, or goals.
Gaia hypothesis
…of the hydrosphere, and other environmental variables that affect the habitability of Earth. The Gaia hypothesis was initially criticized for being teleological – implying the Earth purposefully maintains an atmosphere suitable for life – but this interpretation was rejected by Lovelock. The Gaia hypothesis…
Plato (left) and Aristotle, depicted here in The School of Athens, both developed teleological arguments addressing the universe's apparent order (logos)