September 3, 2004: Hour One: Full-Body CAT Scans / Robert Kennedy Jr - Environmental Politics
September 3, 2004: Hour Two: New Planets / SETI
September 10, 2004: Hour One: Clinical Trials Registration / Bioterrorism Preparedness/ Nuclear Terrorism
September 10, 2004: Hour Two: Women, Heart Disease, and Diabetes / Robert Sapolsky and Stress
September 17, 2004: Hour One: Access to Pathogen Genome Data / Sign Language and Learning
September 17, 2004: Hour Two: Genesis Update / Nanotech News
September 24, 2004: Hour One: Making Memories / Drug Companies
September 24, 2004: Hour Two: Ancient Sea Creature / John Snow and Epidemiology