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Politics : Politics of Energy

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To: Hawkmoon who wrote (6901)	4/4/2009 2:10:10 PM
From: RetiredNow	Read Replies (1) of 86356

I understand that. In fact, I fully agree that our Earth is completely capable of correcting for man made emissions over the long run. However, what you need to take into account during these discussions is that human life can only be sustained within a narrow band of temperatures. One of the things we all agree on is that during these global ice ages, human populations generally decreased, sometimes dramatically, when they happened. Processes oscillate. The more you push in one direction, the greater the correction will be in the opposite direction. So there have been periods of extreme heat during the Earth's geological history as well. Some of those extremes have been natural Earth cycle oscillations, and some have been impacts from asteroids or other causes. How long do you think humans could survive under those conditions? I think a very useful exercise would be to understand exactly what those survivable temperature bands are and then determine if we are on a trajectory to breach those bands. If not, then don't worry about climate change. If so, then let's plan for altering our trajectory, so that humans can survive it.

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