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| Aflevering | Eerste uitzending |
|---|---|
| S13E01 - Halley's Comet: Once in a Lifetime | 21/01/1986 |
| S13E02 - Goddess of the Earth | 28/01/1986 |
| S13E03 - Horsemen of China | 04/02/1986 |
| S13E04 - Life's First Feelings | 11/02/1986 |
| S13E05 - The Case of the Frozen Addict | 18/02/1986 |
| S13E06 - Toxic Trials | 25/02/1986 |
| S13E07 - Skydive to the Rain Forest | 04/03/1986 |
| S13E08 - Return of the Osprey | 11/03/1986 |
| S13E09 - The Rise of a Wonder Drug | 18/03/1986 |
| S13E10 - When Wonder Drugs Don't Work | 25/03/1986 |
| S13E11 - Visions of Star Wars | 22/04/1986 |
| S13E12 - The Search for the Disappeared | 14/10/1986 |
| S13E13 - The Planet that Got Knocked on its Side | 21/10/1986 |
| S13E14 - High-Tech Babies | 04/11/1986 |
| S13E15 - Can AIDS Be Stopped? | 11/11/1986 |
| S13E16 - Is Anybody Out There? | 18/11/1986 |
| S13E17 - Mystery of the Animal Pathfinders | 25/11/1986 |
| S13E18 - Are You Swimming in a Sewer? | 02/12/1986 |
| S13E19 - Sail Wars! | 09/12/1986 |
| S13E20 - Leprosy Can Be Cured! | 16/12/1986 |