Why Do Bees Hum: And 265 Other Great Jokes for Kids (Hide-N-Seek Book.)

Why God Won't Go Away: Brain Science and the Biology of Belief

I Hate Michigan State: 303 Reasons Why You Should Too (I Hate...)

If It's Not Close, They Can't Cheat: Crushing the Democrats in Every Election and Why Your Life Depends on It

Anatomy of Love: A Natural History of Mating, Marriage, and Why We Stray

Is He Gay? : For Every Woman Who's Met the Ideal Man and is Wondering...Why Hasn't he Tried to Kiss Me?

Why So Many Gods?

Dinosaurs And Other Fun Things Scarry Lowly Worms How Where And Why (Lowly Worm's How, Where and Why)

Oceans And Other Fun Things (Lowly Worm's How, Where and Why)

The Bell, the Book, and the Spellbinder (A Johnny Dixon Mystery)