For all the deniers out there, here is a challenge for you. The data sets of temperatures world wide are readily available for anyone that wishes to download them and do their own analysis. You can also download the data for other variables such as volcanic activity, CO2 levels, solar energy and more.
So, I challenge each of you deniers to download this data and then run it through an analysis program. SPSS is the most user friendly but it is not a free program so there is also R which is very powerful and an open source program. Do a multivariate analysis on the data and see which has the most impact on the temperatures. Then maybe do a bivariate analysis and see the correlation between CO2 levels and temperature rise.
Once you have done that, report back your findings. Until such time you are just a bunch of parrots repeating what the GOP has told you to say. Think for yourself for a change, do the work and see what you find.