in addition there was one additional paper and my colleague kirk smith in washington was very much the leader of that paper which focused on the health effects of short-lived greenhouse polluters. much of the focus has been understandably on carbon dioxide, but increasingly we are recognizing short-lived pollutants and i will talk more about those in just a moment are also very important as drivers of climate change and have important implications for public health. so what were the comparisons were made? for to the sectors, household energy, food and agriculture we did an experiment using a 2010 population with and without intervention to radically reduce greenhouse gas emissions in those two sectors and in the house will then energy we had a difference in our errors with regard to india and the u.k.. for two of the sectors we use 2010 population again that we used exposures to rai from 2030 projections comparing business as usual without trying to check greenhouse gas emissions in any way because letting the world economy rip versus substantial reductions and these are the sectors of