Al Gore has a blog that I have started to follow. Here is a link if you are interested: Al Gore: Game Change. He has put together a list of 19 game websites that teach adults and teen gamers about climate change and what we can do about it. He is still an optomist.
Looking down the list and giving each game a try, the one that drew me in and actually wanted to make me try it was MY2050. Plan It Green had some good resources. It was info overload for me about half way through. That is the problem when it comes to talking about climate change for lots of people, I'm afraid. But have fun checking it out.