[JoeRedskin]

I would suggest that the vast majority of "credible" believe global warming is occurring. The real question is whether or not it is the result of human driven and whether there is an impending climate crisis:

http://www.forbes.com/sites/jamestay...-survey-finds-
majority-of-scientists-skeptical-of-global-warming-crisis/

but see: Heartland’s James Taylor Falsely Claims New Study Rejects Climate Consensus | ThinkProgress

Climate change and human interference in climate is one of the most politically driven areas of science out there. Once upon a time, I waded into it to try and understand what the "science" was/is. You simply cannot take anything with an opinion on it at face value and almost always have to look at who is funding whom.