I'm personally of the view that I'm an economist by training and I'm not confident to express an opinion on chemistry and biology. I am saying that in 1996 I personally determined that this was the most important issue of the day and the one issue I wanted to work on. So my concern is more that we really haven't gotten off the mark, I would argue, either domestically or internationally.
I'm more concerned about how we get a change in how our economies work. I'm confident that if we implement the right measures, we will improve faster than anybody's forecasting. If we get our measures right, it will be a good thing that we improved, even if the science on climate change proves wrong in the future.