A popular science author and editor of Skeptic magazine, he was also the co-host and producer of the Fox Family series, Exploring the Unknown. His published works include Science Friction: Where the Known Meets the Unknown (2005) and Why Darwin Matters: The Case Against Intelligent Design (2006).
He attended Pepperdine University and California State University-Fullerton. He published his first non-fiction book, Sport Cycling: A Guide to Training, Racing, and Endurance, in 1985.
A former fundamentalist Christian, he established the Skeptics Society in 1992.
His parents divorced when he was a young child, and he grew up in Southern California with several step-siblings. He later settled in Altadena, California.
He was a guest on The Colbert Report, hosted by Stephen Colbert.