I don't doubt that mankind has had an influence in global weather patterns. As you say, the evidence supports it. However, what does the evidence say regarding how MUCH of an influence? Are we the sole cause of global warming? Or only accelerating a preexisting natural trend?

Another thing, it seems that the argument is purely anthropocentric. How much warming are we talking about? Less than 1 degree C? Does not the climatological record show that the Earth has had far larger variations in global temperature? All 100% natural, since we weren't around then.

So in a sense, what's all the hubbub?

(although, it's obviously [or is it?] not a good idea to cräp in your own nest)

Brian