I don’t know where a fact could be generated anymore, certainly not something involving politics and money. I do know for a fact that the predictions are based on models, created by men with aspirations. Models are guesses predicting what will happen, so there can be no level of certainty the outcome will match the model.
It’s not like all the naysayers are all a bunch of hacks. Look at this list. http://en.wikipedia.org/wiki/List_of_scientists_opposing_the_mainstream_scientific_assessment_of_global_warming