That's an entirely different discussion, and doesn't have any effect on its validity. You are clearly only interested in the political controversy and not the scientific one.
To know what there is to know about anthropogenic climate change will take independent research on your part into the scientific literature, and not political blogs. But you seem to like to watch things, so I will refer you to this series of videos by a scientist and former science corrospondant. http://www.youtube.com/watch?v=52KLGqDSAjo
He covers the evolution of climate change theories, how each of them work, opposing theories, and even covers the errors in the two big opposing climate change movies. It is a good starting point to understanding climate change.