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Published: Wednesday 28 August, 2013

cheap sneakers online cheap sneakers online Answers on Earth Science



What is the Gaia hypothesis?



The Gaia hypotheses, as it was originally proposed by James Lovelock in his book Gaia: A New Look at Life on Earth, suggests that the Earth self regulates. Let me elaborate.



Through the course of its life, planet Earth has undergone many changes. Sometimes, frequent volcanic eruptions have overheated the atmosphere by filling it with ash and greenhouse gases, sometimes external forces like massive asteroids have seriously damaged the atmosphere and the geography of the world.



Lovelock noticed that in spite of all these factors, the proportion of gases in Earth atmosphere has remained more or less the same, ever since life took off as a dominant ph cheap sneakers online enomenon. I think the technical term for this is homoeostasis.



This is a very important observation because the state of life on Earth relies to a heavy degree on the balance of gases in the atmosphere. Even seemingly tiny shifts in this delicate bala cheap sneakers online nce can seriously affect the planet lifesupporting capacity. Lovelock compared this to atmospheres of other planets like Mars which was a curiousity among scientists back then as far as life is considered and predicted that Mars is a dead planet. The planet atmosphere didn reveal any signs of homoeostasis upon telescopic observation. Later missions proved him right. Mars is dead, as far as life of the Earthly kind carbonbased, oxygenbreathing is concerned. cheap sneakers online

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