Crib Sheet: Steven Chu, Secretary of State for Energy

When you've got one of the world's biggest man-made disaster zones on your doorstep, it pays to have an Energy Secretary like Steven Chu. Possessor of an enormous brain, he excels at distilling the big picture of climate change into something that just about everyone can understand. It's all about the small things, he says, exhorting the American people to insulate their homes correctly, and suggesting unorthodox, yet simple ideas like painting roofs white in order to reflect sunlight into...