Tough Math on CO2

The New York Times "Dot Earth" environment blog is a useful place to find information and ideas about the environment.  Today's post, http://dotearth.blogs.nytimes.com/2011/01/20/tough-climate-math-in-the-face-of-co2-and-energy-forecasts/, talks about oil company forecasts for future energy demand and the way the market will be structured.  Based on their estimates of current and projected energy usage and environmental policy, they predict a continued high increase in the amount of carbon dioxide humans will be putting into the atmosphere for a long time to come.  The question is, what can we do in the face of this reality?  Can we find technologies that will alleviate the situation, should we focus on changing public opinions/habits, or both?  What else should we be doing?  We'll take up these and related questions later in our course, but I wanted to draw this to your attention now.