I just watched the movie The Day After Tomorrow. It's funny that, in that movie, global warming triggers another ice age. It seems that the movie was designed for people to hedge their bets against global warming.

Although I'm personally skeptical about the extent of human caused global warming, I don't deny that CO₂ has some effect. That said, CO₂ has been treated way to harshly, in my opinion. The political atmosphere has almost eliminated real conversations about climate change.

People don't seem to want to consider the possibility we might be better off if the earth is slightly warmer. Also, even if we decide things should be cooler, controlling CO₂ isn't our only option available. We know that people have altered the albedo of the earth by creating cities and cutting down trees. This has way more effect on earths temperature than CO₂. So we could control that by planting trees, not building so many damned roads, and maybe even creating artificial clouds.