Janna Levin — Mathematics, Purpose, and Truth (April 3, 2014)

An astrophysicist who’s also explored her science by way of a novel about two pivotal 20th-century mathematicians, Kurt Gödel and Alan Turing. Both pushed at boundaries where mathematics presses on grand questions of meaning and purpose. Such questions helped create the technologies that are now changing our sense of what it means to be human. See more at www.onbeing.org/program/mathematics-purpose-and-truth/130