Forecast vs Reality

Here's a nice graph that shows how the global warming crowd's "runaway warming" hasn't happened. This is a graph presented by James Hansen, the chief global warming promoter, to Congress in 1988:



Reality has fallen far short of the fevered imaginings of James Hansen.

The above information was taken from an article by Doug L. Hoffman at the Watts Up With That website. Go read the whole article if you want to know the science behind critiques of Hansen. You may be surprised to find out that warming caused by CO2 has already nearly saturated, so any additional CO2 will have little effect on global warming:

The absorption frequencies of CO2 are already saturated, meaning that the atmosphere already captures close to 100% of the radiation at those frequencies. Consequently, as the level of CO2 in the atmosphere increases, the rise in temperature for a given increase in CO2 becomes smaller. This sorely limits the amount of warming further increases in CO2 can engender. Because CO2 on its own cannot account for the observed temperature rise in the past century, climate modelers assume that linkages exist between CO2 and other climate influences, mainly water vapor (for a more detailed explanation of what determines the Global Warming Potential of a gas see my comment “It’s not that simple”).