Thinking of ways to save energy is a great way to start any day! Start today by riding a bike or walking to a friend's house. Take public transportation instead of driving to a store. You know what to do. Just do it.

John Yoo, currently a law professor at Cal-Berkley, wrote a few legal opinions for the Bush administration when he was a deputy at the Department of Justice (2001-03). One such opinion is front and center in the Bush/NSA eavesdropping thing, which is a developing story.

Mr. Yoo appears regularly on PBS' Newshour, and here is an archive of his appearances on that show.