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View Diary: So, This is Mars. (Updated) (172 comments)

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  •  Venus is indeed a cautionary tale (5+ / 0-)

    but in reality we would make ourselves extinct - or at least destroy civilization, preventing ourselves from further damaging anything - long before we could alter the atmosphere that greatly, even with runaway feedbacks.  There just isn't enough solar energy input.  Venus gets like twice as much as Earth (because its distance from the Sun is 70% of ours).  

    The Jurassic had many times more atmospheric CO2, it was a hotter planet, and the effects of that were more weird than catastrophic - e.g., making mammalian ancestors smaller because they were too metabolically active for a hot and wet climate, and reptiles bigger because their environment was suddenly really helpful to them.  But we definitely don't want to live in the Jurassic.

    Without a strong safety net and living wage, all labor is forced labor.

    by Troubadour on Sun Mar 17, 2013 at 08:54:51 PM PDT

    [ Parent ]

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