re: You've earned your name → #
I can also post links I guess that will tell you Jim Morrison is alive, God created the world in seven days, sex with children is really quite OK and that men never landed on the mood. The list is endless.
The evidence for the anthropological effect on CO2 level is absolutely insurmountable. CO2 levels can be measured in Antarctic ice over thousands of years, To argue against it and call it an 'hypothesis' like the article writer did is no different than the creationists calling Darwin's work a 'theory' in some hope of debasing it by using terms that most non scientific people do not understand.
There are other factors. There have been regional warm ups and even cool downs over the time we are able to measure, no one disputes that. Ccosmic rays, sun spots etc. do play their role as well, no one disputes that. The influence that mankind has, is however the one part we can control, should we wish to.
This is not political correctness, the scientist in question is simply pointing out that some people will be quick to misuse such research so 'be careful'.