The issue enlightens the rhetorical student in many ways:
- In science, you don't question the source. You question the facts, the analysis, the study protocols. In politics, almost always, the real reason behind the issue is not the bare-faced arguments lain on the table.
- The physical consequences of the issue are even more in dispute -- will the seas actually rise very much? Isn't increased carbon dioxide leading to an explosion of plant growth? More land area becomes plantable, not that that's a problem. Etc. But big and scary oven in shall we live...
- What to do about it is even murkier still. Per the Julian Simon link above, perhaps the quality of life will decrease with massive government intervention so much that it more than offsets any penalties from the physical consequences of global warming. This is not a trivial point, and is the key difference between economists and environmental scientists. Last century was replete with hundreds of "experiments" that all showed the more government intervention in the economy, the lower the quality of life for the people. (One of my sayings, what good is free AIDS treatment in the year 2070 if a more capitalist society had had it cured for 20 years already?)
Let's see...first conservatives scream there is no global warming at all. Then they say OK, there is gw, but it is not man made. Now they say, OK, there is gw, it is man made, but it is good for you.
Meanwhile, here in the very early stages, the forests all across the Southwest are dying. I guess that's a good thing, too.
Whatever.