David Brin is an astrophysicist whose international best-selling novels include The Postman, Earth, and recently Existence. Dr. Brin serves on advisory boards (e.g. NASA’s Innovative and Advanced Concepts program or NIAC) and speaks or consults on a wide range of topics. His nonfiction book about the information age—The Transparent Society—won the Freedom of Speech Award of the American Library Association. (http://www.davidbrin.com)