The New American is right-wing drivel, it really shows your laziness on the issue that you would post an article from this source. The author of the article posted is a fairly well-known Republican operative, why don't you just post an article written by Rush Limbaugh or Michael Savage? It would be just as credible.
http://news.nationalgeographic.com/n...l_warming.html
If you have real interest in global warming, not just talking points developed by right-wing hacks, you may want to diversify your reading material, you could start by looking at the link above. It is something that is fairly easy reading with facts that have not been cherry-picked to fit an agenda. And no, National Geographic is a partisan political group. Good luck, sir.
Cheers.