Paul Davies is a theoretical physicist, cosmologist, astrobiologist, best-selling author, and passionate science communicator. He is a Regents’ Professor and director of the Beyond Center for Fundamental Concepts in Science and co-director of the Cosmology Initiative at Arizona State University. His work has focused on the origin of the universe, the quantum theory of black holes, and the origin of life. He has researched the nature of time since he was a graduate student; his 1974 book The Physics of Time Asymmetry was highly influential. He has written two popular books on the subject: About Time (1995) and How to Build a Time Machine (2001).