Here's an idea: Next time the world decides to put its leaders together to consider actually DOING something about climate change, let's not have them meet somewhere cold. It's cold in Copenhagen. Global warming might actually seem like a myth there.
How about next time they decide to do this, they meet somewhere hot. Somewhere really, really hot. Like Cairo. Make them uncomfortable enough to actually do something meaningful for the billions of humans in developing countries who will suffer most.
We're all connected. You can't hurt someone else without hurting us all. You can't do something to help all of us that won't also help you. Once you come to that realization, decisions are easy.