In a recent paper in Climate Dynamics, MarkWebb of Britain's Hadley Centre for Climate Change and his colleagues reported that clouds account for 66% of the differences between members of one important group of models and for 85% of them in another group.
But I also know that thanks to the governor here in Virginia, Tim Kaine, thanks to two outstanding senators, Mark Warner and Jim Webb, and a great congressman, Congressmen Jim Moran and as well as Congressman Gerry Connolly, and thanks to the work of Ray here and the rest of my administration, we've made some meaningful progress over the last few months.