National Geographic, huh? Hmmm, not a publication known historically for their pro-industry, anti-environment stances are they?
Geez, I'll bet our little Martian friends are now wishing the President would have signed the Kyoto protocol!
I predict that within 10 years time the whole Global Warming craze will have been debunked and the vast majority of scientists who now buy into the theory lock, stock and barrel will have done a complete about-face on the topic. Without of course, as is usually the case, being held at all accountable for their causing near world-wide panic.