Josh Frieman is a senior staff scientist at the Fermi National Accelerator Laboratory and Professor of Astronomy & Astrophysics. He’s also a member of the Kavli Institute for Cosmological Physics at the University of Chicago. Frieman’s research focuses on cosmology, including the study of dark energy and dark matter, the large-scale structure of the Universe, supernovae, and gravitational lensing. Frieman is a fellow of the American Physical Society and of the American Association for the Advancement of Science and an honorary fellow of the Royal Astronomical Society. Currently, he serves as director of the Dark Energy Survey, an international collaboration of 300 scientists carrying out a five-year survey of 300 million galaxies using a camera they built for a four-meter telescope in Chile, to explore why the universe is speeding up. Josh Frieman received his B.S. in physics from Stanford University and his Ph.D. in physics from the University of Chicago.