The Constants of Nature: From Alpha to Omega--The Numbers That Encode the Deepest Secrets of the Universe
Pantheon Books, 14 January, 2003.

The Universe in a Nutshell
Bantam Doubleday Dell Pub (Trd), 06 November, 2001.

Diagonally-Parked in a Parallel Universe : Working Through Social Anxiety
Effectivness-Plus Publications, 01 January, 2000.

The Holographic Universe
Perennial, April, 1992.

The Guide to Getting It On! (The Universe's Coolest and Most Informative Book About Sex)
Goofy Foot Pr, February, 2000.

The Elegant Universe: Superstrings, Hidden Dimensions, and the Quest for the Ultimate Theory
Vintage Books, 29 February, 2000.

Horizons With Infotrac: Exploring the Universe
Wadsworth Pub Co, January, 2002.

Rare Earth: Why Complex Life is Uncommon in the Universe
Copernicus Books, January, 2000.

Magnificent Universe
Simon & Schuster, October, 1999.