April 6, 2001, Hour One: Human Cloning
April 6, 2001, Hour Two: Dark Energy / Threat of Bioterrorism
April 13, 2001, Hour One: Space Shuttle Past and Future
April 13, 2001, Hour Two: Intelligence Technology / Industrial Ecology
April 20, 2001, Hour One: Oceans and Fisheries Update
April 20, 2001, Hour Two: Endangered Species and Biotechnology
April 27, 2001, Hour One: Mars Exploration / Feathered Fossil Find
April 27, 2001, Hour Two: Preserving Digital Information