Leonard Mlodinow received his PhD in theoretical physics from the University of California at Berkeley and currently teaches at Caltech. His books include Feynman's Rainbow, Euclid's Window, and The Drunkard's Walk: How Randomness Rules Our Lives, which was a New York Times Bestseller, Editor's Choice, and 2008 Notable Book of the Year. Mlodinow is the writing collaborator of Stephen Hawking and co-author of the recently published The Grand Design, a book that argues that invoking God is not necessary to explain the origins of the universe.

Deepak Chopra and physicist Leonard Mlodinow debate the divide between science and spirituality in their new book, War of the Worldviews. Here they discuss the origin of life, evolution, and other contentious issues.