December 24, 2001

Gary Cross, history professor at Penn State University, talks with Todd about consumerism in America today. He talks about how ownership of goods affects our self-identity, and how possession of luxury items gives us a feeling of freedom and contentment. His book is titled "An All-Consuming Century: Why Commercialism Won In Modern America".

Lee Siegel, science writer, talks with Todd about the geologic history of Yellowstone and Grand Teton National Parks. He discusses how the North American continent slowly moved over the Earth's largest hotspot millions of years ago. His book is "Windows Into The Earth: The Geologic Story of Yellowstone and Grand Teton National Parks".