Ch. 1. You are an amazing machine
Ch. 2. Adventures in zoology: The how and why of running, swimming, soaring, and slithering
Ch. 3. The essential science of plants: They don't dance, but they've got moves
Ch. 4. Waterworld: How the other two-thirds lives
Ch. 5. Evolution: The fact of life
Ch. 6. Move! How everything that happens ... happens
Ch. 7. Heat: Natural laws you need to know
Ch. 8. Chemicals and their reactions
Ch. 9. Light: Secrets of sunlight, starlight, and our friend Roy
Ch. 10. Tiny particles: What it's all made of
Ch. 11. The four fundamental forces of nature
Ch. 12. Astrobiologists: The alien hunters
Ch. 13. There's no place like Earth
Ch. 14. What you need to know about climate change and why
Ch. 15. Water: Why it's hard to find on our very wet world
Ch. 16. How to build and shape a solar system
Ch. 17. Interesting places to visit in the solar system, if you could
Ch. 18. Huge: cosmology, astrophysics, and a few unsolved mysteries of the universe
