December 25, 2001

Wickliffe Walker, world-class paddler, talks with Todd about kayaking the Tsangpo River. He tells Todd about the power of this river, which has never been fully mapped. He describes how he and his group planned their route, the dangers of the river, and what they did after their group leader died on the trip. His book is "Courting The Diamond Sow: A Whitewater Expedition On Tibet's Forbidden River".

Martin Rees, astronomer, talks with Todd about his theory on why there is life. He talks about the existence of six numbers, which sustain life and support the universe. He explains how he uses the research of past scientists to support his theory.