sorry, no intent to insult you.
let me see if i can answer part of that.
the IPCC found out that there was a lot of evidence that most of the increase in temperature was due to natural causes and natural cycles. since their stated mission is to prove that man is responsible and that things have to be done their way or disaster will follow, then they cant have people understanding that most of that increase has nothing to do with man, and that man cant do anything about the majority of it. Their recommendations are pretty severe, which is hard for most people to accept. if they tell people that the recommendations will only slow the expected change, few people would be willing to follow it.
In addition there is considerable more evidence that the increases are due more to natural cycles and conditions of the earth than the IPCC wants people to see. If the majority of it is cyclic and we are near the top of the cycles, then the temperature rises will drop with out the need for those severe recommendations.
To cover these cyclic and other causes, they changed the name from global warming to climate changes. part of this was due to the fact that some areas are seeing a drop in temperature. But mostly it was to cover the fact that the new name covers all the various causes of climate change. That way when politicians and others quote them, there is no obvious connection between what they are quoting and solar flare, solar energy increases, volcano activities, ect.
one example is that under the ice that has been melting so much, they have discovered an active volcano, that was appearantly dormant for centuries. its outputting a lot of heat into the water below the ice caps, which is causing part of the melt off.
http://news.nationalgeographic.com/news/2001/11/1129_icebreaker.html edit, i could have made a small mistake here, i believed there were ones under the arctic, but have not found the links i was looking for. instead i found ones about Antarctica volcanos melting off much of the ice there.
http://en.wikipedia.org/wiki/Antarctica on the other hand i did find these
http://www.volcano.si.edu/world/volcano.cfm?vnum=1707-01- and
http://www.volcano.si.edu/world/volcano.cfm?vnum=1707-02-
