Climate change activists love to insist that carbon dioxide is behind global warming, and they've made a sport out of refuting claims to the contrary. However, it's getting harder to defend their delusional stance as more than 100 different scientific papers and counting show that carbon dioxide's effect on the climate is actually quite small.

The papers use terms such as "negligible" to describe the effects of CO2 on the climate. For example, a paper from last year said there was not "a consistent warming with gradual increase (in CO2) in low to high latitudes in both hemispheres, as it should be from the global warming theory." After pointing out the complexity of climate predictions, the researchers said it is simply not possible to support the notion that global warming stems from human-caused greenhouse effect.