“The measurements are the same no matter who makes them. They’ve been getting the same results for 150 years,” Denning said during a lecture Tuesday night attended by about 100 people. “The molecules don’t care. It doesn’t matter what you think. These things are up there vibrating and sending out their energy your way.”

Denning said models and experiments predict the temperature of North America will rise between 5 and 10 degrees by 2090, depending on how much or how little additional carbon dioxide is released into the atmosphere by burning fossil fuels such as coal and oil.

http://www.coloradoan.com/article/20101020/NEWS01/10200331

I get it. They have been saying the same thing for 150 years (except for when they are worried about global cooling) and neither ever happens.