Knocking on Heaven’s Door

Today on Focus we're joined by eminent physicist Lisa Randall to discuss her new book Knocking on Heaven's Door. Randall offers a rousing defense of the role of science in our lives—and backs it up with her cool knowledge of particle physics, cosmology, and the engineering behind the Large Hadron Collider.

Guest: Lisa Randall, Ph.D. (Frank B. Baird, Jr. Professor of Science at Harvard University; author of Knocking on Heaven's Door: How Physics and Scientific Thinking Illuminate the Universe and the Modern World)