In a recent paper in Climate Dynamics, Mark Webb 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.

ECONOMIST: Climatology: Grey-sky thinking | The

Virginia Democrat senators Jim Webb and Mark Warner signed a bipartisan letter to the EPA supporting a temporary waiver of federal ethanol mandates.

FORBES: EPA: Green Gone Wild

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.

WHITEHOUSE: President Obama on Highways and Recovery