Tuesday's switch by the independent-minded Pennsylvanian also helps Democrats to solidify power in the Senate.
On Monday, ZenithSolar unveiled a new solar dish that could make the cost of solar energy competitive with fossil fuels.
A less-expensive education is the appeal at stripped-down satellite campuses.
Lagging poll numbers for the Treasury secretary reflect continuing anger over bank bailouts.
As vice president, Biden is yin to Obama’s yang. But he’s definitely no Cheney.