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Politics : View from the Center and Left

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To: Ilaine who wrote (25105)	7/25/2006 2:46:34 PM
From: Mary Cluney	of 541687

>> 1. Whether the climate is changing beyond natural variations (historical temperature record). 2. Whether human/industrial activity is responsible for the change (attribution of recent climate change) and if so, to what extent. 3. How large future changes will be. 4. What will be the consequences of climate change. Look. It should be obvious that it takes a lot to change nature, even if we wanted to. It is also obvious that human activity has to have some impact by just looking at the number of cars on the road and the number of smoke stacks billowing away. What we are talking about are minute changes. We did not have a lot to do with most of the .4 degree centigrade warming over the past 50 years, but we accounted for some of it. Most scientists agree with that. The small difference attributed to human activity may cause some additional amount of ice cap melting. If water levels rise a few feet, as far as nature goes is no big deal. But for humans it means that large regions where humans congregate goes under water. That is a big deal for humans. It is no big deal for nature. Cosmically speaking, that is just a very small rounding error. So what is the big deal to understand?

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