I'm no climate change denier - if I was, I'd have to deny that there were ever ice ages. Climates change, end of story. The historical record of the last millennium show this clearly. People didn't try to change the change, though. First of all, it is pointless - that change is going to happen regardless - and secondly, even if it could be changed, what arbitrary climate would we choose? Would you be happy if our ancestors had stopped the climate change that rolled the glaciers back?