EBOOK or PDF (Life, Temperature, and the Earth) by David Schwartzman

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Life, Temperature, and the EarthThe idea that living and the atmosphere oceans and soils comprise an interactive self regulating soils comprise an interactive self regulating the Gaia concept was first roposed nearly thirty years regulating the Gaia concept was first Under Lock and Key proposed nearly thirty years Since then researchers have been seeking new connections between life and the global environment David Schwartzman contributes to that search by examining how the Earth's biosphere regulates itself over geologic time Emphasizing long term geologic trends not the short termerturbations that have received so much media attention eg the so called greenhouse effect the author resents and elucidates his theory of biospheric evolution Life Temperature and the Earth updates and modifies important aspects of the Gaia hypothesis in light of geochemical geophysical mathematical and aleontological da. ,


Ta that were either ignored or unavailable at the time the hypothesis was developed Schwartzman argues that the Earth's climatic temperature has been biologically regulated amidst the backdrop of variable volcanic outgassing and an evolving sun The key to this regulation discussed here in depth has been the rogressive increase in life's romotion of weathering on land over geologic time The book is the first to take note of strong evidence for much higher temperatures rior to about two billion years ago and their role in constraining the evolution for much higher temperatures to about two billion years ago and their role in constraining the evolution of and delaying the emergence of complex multicellular lifeSchwartzman sets the stage by introducing his theory of biospheric evolution and outlining the development of the Gaia concept during the 1980s and.

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1990s He then resents a systematic EXPOSITION OF THE WEATHERING PROCESS DISCUSSING of the weathering rocess discussing habitability of the Earth over geologic time and the role of such abiotic factors as tectonics and the carbon geodynamic cycle in climatic evolution The final third of the turns to a reinterpretation of the surface temperature history of the Earth ositing a much warmer Precambrian surface than conventionally believed and discussing the implications of this fact to evolutionary biology and Precambrian Earth surface than conventionally believed and discussing the implications of this fact to evolutionary biology and the search for life elsewhere in the universeDetermining the history of climate and investigating the self organization of the biosphere Life Temperature and the Earth explores the very foundations of environmental science and illuminates the evolution of life itse.