August 6, 2004: Hour One: Mars Update / Voting Technology Update
August 6, 2004: Hour Two: Archaeopteryx / Franklin's Technology / Invention of the Xerox Machine
August 13, 2004: Hour One: Hydrogen Economy
August 13, 2004: Hour Two: Stem Cells Update / Alvin /Power Failure Anniversary
August 20, 2004: Hour One: Science News Roundup
August 20, 2004: Hour Two: Conjoined Twins / Math and the Mona Lisa
August 27, 2004: Hour One: California Climate Change / Military Doctors and Prisoner Abuse
August 27, 2004: Hour Two: ABCs of Linux / Why Planes Fly