there is no real doubt that there is some cliumate change, but we have no significant impact on it
here are some quotes from the site ourcivilization.com
"The amount of warming from 1881 to 1993 is 0.54° C. Nearly 70 percent of the warming of the entire time period — 0.37° C —occurred in the first half of the record — before the period of the greatest buildup of greenhouse gases."
"Although all of the greenhouse computer models predict that the greatest warming will occur in the Arctic region of the Northern Hemisphere, temperature records indicate that the Arctic has actually cooled by 0.88° C over the past fifty years."
"There is no proof that the current warming is caused by the rise of greenhouse gases from human activity. Ice core records from the past 650,000 years show that temperature increases have preceded—not resulted from—increases in CO2 by hundreds of years, suggesting that the warming of the oceans is an important source of the rise in atmospheric CO2. As the dominant greenhouse gas, water vapour is far, far more important than CO2. Dire predictions of future warming are based almost entirely on computer climate models, yet these models do not accurately understand the role or water vapor—and, in any case, water vapor is not within our control. Plus, computer models cannot account for the observed cooling of much of the past century (1940–75), nor for the observed patterns of warming—what we call the “fingerprints.” For example, the Antarctic is cooling while models predict warming. And where the models call for the middle atmosphere to warm faster than the surface, the observations show the exact opposite."
just My Opinion (and theirs)