We are in the middle of a period of climate change. That much is readily observable. Problem is that there is ample evidence in the geologic record of other periods of climate change in the cenezoic (and recent cenezoic at that) that make what we're experiencing now look like a speedbump. There is similar evidence that atmospheric CO2 levels during the cretaceous were higher than they are today. I'm just sick and tired of being lectured on climate change by people who couldn't tell you the difference between methane and CO2 if their lives depended on it. Rant over. . . . . . .
