It'd really be nice if all the climatologists would address the elephant in the room... the real source of increased CO2 concentration. It's not due to melting polar ice caps... It's not due to melting glaciers.... It's not due to warming oceans... It's not due to deforestation... It's not due to increased fossil fuel usage... All of these "conclusions" are examples of the flimsy link between causation and correlation. They can't be proven no matter how much chest thumping one engages in... There's a much simpler explanation for the increase in CO2 concentration... It's so obvious that many blind to it. Blind to it because it's a mundane, every day occurrence. Despite the fact it happens billions of times every second. It's a perfect example of the idea of small changes, big effects. Kinda like the embezzlement scheme in Office Space.... The mysterious cause of increased CO2 concentrations on Earth is the result of ..... wait for it .... Humans breathing.... Here are some rough numbers (World Population Clock): Est. living population in 1960: 3 Billion Est. living population in 2011: 7 Billion Est. total humans on earth to reach population of: 3 Billion in 1960: 11.5 Billion (3 Billion living, 8.5 Billion deceased) 7 Billion in 2011: 103.3 Billion (7 Billion living, 96.3 Billion deceased) in 51 years, we have 4 Billion more people are alive and 87.8 Billion more have come and gone. Sooner or later, someone is going to have to determine the average CO2 concentration in human exhalation, and scale it to the 103.3 Billion people who've breathed on this planet. And then compare it to the various readings so frequently cited by the "Peter crying wolf" types. I'm pretty sure the volume of CO2 resulting from human exhalation far, far exceeds that produced by fossil fuel burning, cows farting, deforestation, or the amount released by the oceans. Possibly greater than those combined... And we haven't even began discussing the effects of the body heat transferred to the environment by all these extra bodies. No matter what the "research" discovers, it's highly likely that all the changes we've "discovered" are merely the short-term noise of long-term weather patterns and solar/sunspot cycles... The analogy I like to compare the GW debate is the notion of long-term stock investors trying to pick the stocks they'll hold for 20 years by watching 5 minute bars....