When the top review blurb on the back cover read "...not just physics for poets...", I was sold. And I wasn't disappointed, either.
You Are Here: A Portable History of the Universe is a very ambitious book, intending to give the layperson a thumbnail sketch of the current state of everything from astrophysics to the particle zoo to evolutionary biology. It works surprisingly well; I digested it in two big gulps. Too many popular science books are written by a twenty-pound brain who can't write his way out of a sack, assisted by a ghostwriter of dubious talents, whereas Potter is a writer who happens to have a degree in science; the difference this makes in readability is noticeable. Recommend.