I was just thinking about this for some reason. I think that it is clear that the current climate is changing (although when in history was it not?). I think that I am also inclined to believe, based on the evidence that I've read, that we may have something to do with this most recent bout of changes. Now, I have not read any experts opinion that suggests we can fix the problem at this point in time. This leaves us with 3 options that are practical:

1. Adapt. Find better and more sustainable ways of cooling ourselves, growing more resilient crops and irrigation measures, preserving drinking water and pushing de-desalinization methods.
2. Alter our methods of powering our civilization. More for cost saving, pollution reduction, national security, and grid stabilization reasons than limiting carbon emissions; we need to develop more sustainable and varied ways of powering our lives. The increased global temperatures will put greater strain on our current networks. Correcting our current usage issues will have the added benefit of reducing carbon emissions which will satisfy the people who are obsessed with that stuff just to get them off of our backs.
3. Colonize other planets. Push the development of the moon and mars and eventually actualize Wall-E/Cowboy Bebop type stuff. For some reason preservation of the species is something that we care about, so we should be trying to do that long after the sun burns out or we collide with another galaxy.

Any thoughts?