While winter is under way in the north, it's summer down in Antarctica. Ira Flatow offers a look at research on the frozen continent, from astronomy, to the polar ice caps, to life on a frozen lake.
William L. Holzapfel, assistant professor of physics, University of California Berkeley.
Richard B. Alley, professor of geosciences, Penn State University.
Peter Doran, assistant professor of Earth and Environmental Sciences, University of Illinois at Chicago.