That National Geographic article is the most recent and likely most extensive write-up on the problem I've read thus far. While I think it's absurd to say the planet is not warming up, or to say that humans have had no effect on that temperature rise, the question that the article seemed to leave unanswered was, just how much of a factor are we? 20%? 50%? 95%? That's what I am interested to know, and I don't think the answers are going to be immediately forthcoming. Regardless, what's done is done. It's sad that even with what is fairly good evidence that we've at least caused some of the problem, world governments won't take steps. In 100 years they'll be thanking us. 
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-Quinn
Man, n. ...His chief occupation is extermination of other animals and his own species, which, however, multiplies with such insistent rapidity as to infest the whole habitable earth, and Canada. - A. Bierce, Devil's Dictionary, 1906
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