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| Aflevering | Eerste uitzending |
|---|---|
| S17E01 - Poison in the Rockies | 09/01/1990 |
| S17E02 - Race for the Top | 23/01/1990 |
| S17E03 - Disguises of War | 06/02/1990 |
| S17E04 - The Bomb's Lethal Legacy | 13/02/1990 |
| S17E05 - The Big Spill | 27/02/1990 |
| S17E06 - The Genius That Was China: Rise of the Dragon (1) | 20/03/1990 |
| S17E07 - The Genius That Was China: Empires in Collision (2) | 27/03/1990 |
| S17E08 - The Genius That Was China: The Threat from Japan (3) | 03/04/1990 |
| S17E09 - The Genius That Was China: Will the Dragon Rise Again? (4) | 10/04/1990 |
| S17E10 - The KGB, The Computer and Me | 02/10/1990 |
| S17E11 - Neptune's Cold Fury | 09/10/1990 |
| S17E12 - To Boldly Go... | 16/10/1990 |
| S17E13 - Poisoned Winds of War | 23/10/1990 |
| S17E14 - The Blimp is Back! | 30/10/1990 |
| S17E15 - Earthquake! | 06/11/1990 |
| S17E16 - Killing Machines | 13/11/1990 |
| S17E17 - Can the Elephant Be Saved? | 20/11/1990 |
| S17E18 - We Know Where You Live | 27/11/1990 |
| S17E19 - In the Land of the Llamas | 04/12/1990 |
| S17E20 - What's Killing the Children? | 18/12/1990 |