Energy Secretary to Step Down

After four years as energy secretary, Steven Chu is calling it quits. Chu announced Friday that he plans to step down as soon as a successor is confirmed. After a tumultuous tenure, marked by successes in green-energy spending and the shamefully public collapse of Solyndra, Chu is the last member of the long-serving Obama cabinet to announce his plans for the second term. Obama has made no mention of a replacement, but word around D.C. is that the shortlist includes former North Dakota senator Byron Dorgan, former Michigan governor Jennifer Granholm, former Washington governor Chris Gregoire, and former Colorado governor Bill Ritter, among others.