Dr. Judith Curry is an American climatologist and former chair of the School of Earth and Atmospheric Sciences at the Georgia Institute of Technology. She talks to us about some of the topics in her book: Climate Uncertainty and Risk: Rethinking Our Response. "World leaders have made a forceful statement that climate change is the greatest challenge facing humanity in the 21st century. However, little progress has been made in implementing policies to address climate change." We discuss CO2 , power generation, and practical issues such as reliability of power and the extreme costs of prematurely eliminating gasoline-powered vehicles. For those who are concerned about it, what is a good and safe source of energy that has a zero "carbon" footprint? Participants: Dr. Judith Curry, Dan Elmendorf