Full Episodes
Season 4
- July 28, 2009
Moon Smasher · Secrets in the Salt · Bird Brains · Profile: Lonnie Thompson
- July 21, 2009
The Science of Picky Eaters · Smart Sea Lions and Talking Walruses · Profile: Sangeeta Bhatia · Capturing Carbon
- July 14, 2009
Marathon Mouse · Dinosaur Plague · Profile: Franklin Chang-Diaz · Space Storms
- July 7, 2009
Hunt for Alien Earths · Art Authentication · Profile: Maydianne Andrade · Autism Genes
- June 30, 2009
Diamond Factory · Anthrax Investigation · Auto-Tune · Profile: Luis von Ahn
Season 3
- July 30, 2008
Phoenix Mars Lander · Brain Trauma · Mammoth Mystery · Profile: Judah Folkman
- July 23, 2008
Leeches · The Search for ET · Stem Cells Breakthrough · Profile: Edith Widder
- July 16, 2008
Bird Brains · Space Storms · Profile: Yoky Matsuoka · Smart Bridges
- July 9, 2008
Saving Hubble · First Primates · Profile: Alfredo Quiñones-Hinojosa · Killer Microbe
- July 2, 2008
Personal DNA Testing · Art Authentication · Capturing Carbon · Profile: Pardis Sabeti
- June 25, 2008
Dark Matter · Of Mice and Memory · Profile: Hany Farid · Wisdom of the Crowds
Season 2
- July 24, 2007
T. Rex Blood? · Epigenetics · Kryptos · Profile: Arlie Petters
- July 10, 2007
Sleep · CERN · Emergence · Profile: Julie Schablitsky
- January 9, 2007
Aging · Space Elevator · Maya · Profile: Bonnie Bassler
- November 21, 2006
Mass Extinction · 1918 Flu · Profile: Cynthis Breazeal · Papyrus
- October 3, 2006
Asteroid · Island of Stability · Obesity · Pofile: Karl Iagnemma
