We all use energy, but many of us don't think about where it comes from or how to ensure it's not only clean, but reliable and plentiful. Changing Energy, a new book by Dr. John Perkins, brings energy systems out from the shadows. Hosts Gigi Diekelman and Claire Naughton speak with Dr. Perkins about his book, the advantages and risks of different energy sources from solar to nuclear, and how we might take steps forward as a society to address the shared challenge of climate change. John H. Perkins is Professor Emeritus at The Evergreen State College, where he taught Environmental and Energy Studies and directed the Graduate Program on the Environment. He is a Senior Fellow with the National Council for Science and the Environment as well as Visiting Scholar at the University of California, Berkeley. He is also the author of Geopolitics and the Green Revolution: Wheat, Genes, and the Cold War and Insects, Experts, and the Insecticide Crisis: The Quest for New Pest Management Strategies.