December 2, 2005: Hour One: Gender Differences in Learning and Cognition
December 2, 2005: Hour Two: Stress and Health
December 9, 2005: Hour One: Beyond Kyoto / Cassini / Night Sky
December 9, 2005: Hour Two: Face Transplant / Alan Lightman
December 16, 2005: Hour One: Peer Review / Egg Donation
December 16, 2005: Hour Two: Neglected Diseases
December 23, 2005: Hour One: Pennsylvania Intelligent Design Trial Decision / Annual Birding Show
December 23, 2005: Hour Two: Mammoth Genes / Ray Kurzweil on Future Tech
December 30, 2005: Hour One: Cloning Scandal / Science Year in Review
December 30, 2005: Hour Two: Oliver Sacks / What Scientists Owe the Public