Janna Levin

**Janna Levin** is a professor of physics and astronomy at Barnard College of Columbia University. She is also director of sciences at Pioneer Works, a center for arts and sciences in Brooklyn, and has contributed to an understanding of black holes, the cosmology of extra dimensions, and gravitational waves in the shape of spacetime. Her previous books include \_How the Universe Got Its Spots\_ and a novel, \_A Madman Dreams of Turing Machines\_, which won the PEN/Bingham Prize. She was recently named a Guggenheim fellow (2012).