David Grinspoon Quote
One of the more extreme claims of the Gaia camp, at present neither proven nor refuted, is that the influence of life over the eons has helped Earth hold on to her life-giving water, while Venus and Mars, lifeless through most of their existence, lost theirs. If so, then life may indeed be responsible for Earth’s plate tectonics. One of the original architects of plate tectonic theory, Norm Sleep from Stanford, has become thoroughly convinced that life is deeply implicated in the overall physical dynamics of Earth, including the nonliving interior domain. In describing the cumulative, long-term influence of life on geology, continent building, and plate tectonics, he wrote, The net effect is Gaian. That is, life has modified Earth to its advantage.6
One of the more extreme claims of the Gaia camp, at present neither proven nor refuted, is that the influence of life over the eons has helped Earth hold on to her life-giving water, while Venus and Mars, lifeless through most of their existence, lost theirs. If so, then life may indeed be responsible for Earth’s plate tectonics. One of the original architects of plate tectonic theory, Norm Sleep from Stanford, has become thoroughly convinced that life is deeply implicated in the overall physical dynamics of Earth, including the nonliving interior domain. In describing the cumulative, long-term influence of life on geology, continent building, and plate tectonics, he wrote, The net effect is Gaian. That is, life has modified Earth to its advantage.6
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