nordhaus: we want to know what the relationship is, historically, between the economy and the forcesare leading to climate change. and then in the future, we want to get our best, best guess as to what's going to happen to the economy and to the climate, and to the impacts of that on human societies over the decades to come. it's as simple as that. one of the conclusions of these analyses is and was that the kyoto protocol was neher going to make a big difference, nor very efficient. woman: how do you put a cost on new malarial outbreaks that are as a result of mosquitos having a larger range that they can live in because of changes in temperature? or the fact that mosquitos bite more when temperatures are one to two degrees higher? how do you put a cost on the relocation of millions of people in bangladesh that live at or below sea level? it doesn't make sense to just completely overturn your entire economy, because this is just one of the problems, just one of the threats we face. eizenstat: the ice caps which are going to melt aren't going to somehow reformulate. the sea levels wh