As anyone can tell you the use of fossil fuels and the rise in CO2 emissions is the main cause of global warming...or is it? The truth that none of the environmental groups want you to know is that there is no actual scientific evidence of global warming. That's not to say it isn't happening just that there is no hard proof. As a matter of fact nothing is happening today that hasn't happened many times in the past. The Earth just naturally goes through periods of rising and falling temperatures.
Several years ago NASA launched a series of weather satellites that have been taking very accurate measurements. NASA recently released that data and it actually showed global temperatures stopped increasing in 1998. The big warming that everyone has been worried about since the 70's is a whopping .7 degrees. Actually since 2002 temperatures have been trending downward by .4 degrees. This despite CO2 levels that are still increasing. Here is the in depth story if you want to read the whole thing.
I'm going to guess that funding for the environmental groups is probably better if they conveniently leave out the truth about global warming.