EP33 - The Lysenko Affair
 EP32 - How on Earth Did They Do That?
 EP31 - The Neglected Harvest
 EP30 - Joey
 EP29 - The Greatest Advance Since the Wheel?
 EP28 - The Other Way
 EP27 - The First Signs of Washoe
 EP26 - Do as You Are Told
 EP25 - An Unholy Scramble
 EP24 - Adam or Eve?
 EP23 - Listen and Be Loyal
 EP22 - What Price Steak?
 EP21 - Mines, Minerals and Men
 EP20 - The Immigrant Doctors
 EP19 - The Race for the Double Helix
 EP18 - Hills of Promise
 EP17 - Who Needs Skills?
 EP16 - The Secrets of Sleep
 EP15 - Search for Life
 EP14 - Bridges: When It Comes to the Crunch
 EP13 - A Noah's Ark for Europe
 EP12 - The Hunting of the Quark
 EP11 - This Yankee Dodge Beats Mesmerism Hollow
 EP10 - The First Ten Years
 EP9 - Fusion: The Energy Promise
 EP8 - The Future Goes Boom
 EP7 - Where Did the Colorado Go?
 EP6 - The Writing on the Wall
 EP5 - Pedal Power
 EP4 - The Great Fish Hunt
 EP3 - Never Too Late to Learn
 EP2 - Bird Brain - The Mystery of Bird Navigation
 EP1 - A Matter of Self-Defense