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One of Seven: National Academies

Started by Rod Kaufman, 10/17/2012 06:49PM
Posted 10/17/2012 06:49PM Opening Post
Posted 10/21/2012 06:04PM #1
Interesting. It sounded balanced, but left out the important reflective property of more water vapor in the atmosphere. Thinking about it in more depth, both of the positive feedbacks mentioned were natural (albedo effect of ice melting and more water vapor as a greenhouse gas), and would have caused a runaway greenhouse effect without any human influence before the industrial revolution. That makes me skeptical of the conclusion that the positive feedbacks outweigh the negative ones. The Earth's past history suggests otherwise.

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