Daniel Holz is a professor at the University of Chicago in the Departments of Physics, Astronomy & Astrophysics, the Enrico Fermi Institute, and the Kavli Institute for Cosmological Physics. Holz is a member of the Laser Interferometer Gravitational-Wave Observatory (LIGO) collaboration; his research focuses on black holes, gravitational waves, and cosmology. He has received a National Science Foundation CAREER Award, a Quantrell Award for Excellence in Undergraduate Teaching, and as a member of LIGO received the Breakthrough Prize in Fundamental Physics. He was selected as a Kavli Fellow of the National Academy of Sciences and is an APS Fellow. Holz is co-Chair of the Science and Security Board of the Bulletin of the Atomic Scientists, and in this role helps set the time of the Doomsday Clock.