7x04: Portrait of a Killer
7x03: Living Machines
7x01: The Elusive Illness
6x18: Termites to Telescopes
6x16: India: Machinery of Hope
6x15: All Part of the Game
6x14: Race for the Gold
6x13: Sweet Solutions
6x12: Life on a Silken Thread
6x11: A Plague on our Children
6x10: The Keys of Paradise
6x08: The Beersheva Experiment
6x07: The End of the Rainbow
6x06: The Invisible Flame
6x05: Patterns from the Past
6x04: Cashing in on the Ocean
6x03: A World of Difference
6x02: Long Walk of Fred Young