A very hotly contested issue, indeed. It does most certainly fall along political party line for the most part. I personally believe that the reasons for climate change are not attributed solely to man. Nor do I believe that it is solely attributed to cyclical changes in the dynamic life of the earth in general but more of a combination of the two. There is no doubt that man has had an impact on climate yet there is doubt to what extent. There is also no doubt that climate is dynamic and has experienced change in the course of the earth's recorded history.
Those things having been said, climate change and its effects on reefs is notable and worthy of discussion. I don't know all of the science, nor all the reasons, but I do know that reefs are bleaching. I also don't know if this fact is attributable to only climate change. I believe that there are pollution issues that have an effect on the general health of the reef regardless of climatic change.
In any case, I'm interested to read opinions on the matter. For now, I'll leave my politics out of the discussion.