We haven't taken a position, but the reality is that clean air is important to our respiratory health and to cardiovascular health more broadly.
Our focus has been on healthy eating, and that's because the burden of disease related to poor nutrition or to the sins of affluence—meaning eating too much of the wrong foods in the developed world—is the biggest source of mortality. Interestingly, as our friends from the Council for International Co-operation would know, that has now changed in the developing world as well. More mortality comes from overeating the bad foods than from malnutrition. The food issues have been our focus, but I think your premise is one I will take back home, if I may.