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Terra biosphere mass extinction

  1. Dec 2, 2008 #1

    Is Terra's biosphere dying?

    Solar Transitions...
    Sun - life cycle - Wikipedia
    Distant future of the Sun and Earth revisited
    Date set for desert Earth
    Biosphere extent - Wikipedia
    Extinction - modern mass extinction - Wikipedia
    Last edited: Dec 2, 2008
  2. jcsd
  3. Dec 4, 2008 #2
    Well basically, most are unverifiable speculations approaching philosophy. I doubt about the habitable zone if it's based on a radiation model only, neglecting convection/advection of heat. If there is more sunlight, you would expect the earth just evaporating more water and thus having more clouds, which is increasing reflextivity, which lowers the absorbted radiation and hence keeps the temperature lower. But the end must be somewhere.
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