There are no direct health effects from greenhouse gases. The analysis that we do is premised on the direct health effects of the air pollutants in terms of exposure.
The implications of Kyoto are global. Climate change is something that's developing, as Susan mentioned in her speech, and is ongoing. You can't do an economic analysis on the impact of one country in those terms, because you're looking at long-term impacts on the change in the climate and the resultant health benefits. We do not have enough certainty from the models to calculate those things. If you were to try to divide it down on a country-by-country basis, you would get a negligible impact. That's not to say that there are not benefits from reducing greenhouse gas emissions; it's simply that you cannot calculate those health benefits with the science that's available, because they do not have direct health effects.