Temporada 17
Imagens
| # | Imagem | Título | Exibido |
|---|---|---|---|
| 1 | Poison in the Rockies | 9 de jan. de 1990 | |
| 2 | Race for the Top | 23 de jan. de 1990 | |
| 3 | Disguises of War | 6 de fev. de 1990 | |
| 4 | The Bomb's Lethal Legacy | 13 de fev. de 1990 | |
| 5 | The Big Spill | 27 de fev. de 1990 | |
| 6 | The Genius That Was China: Rise of the Dragon (1) | 20 de mar. de 1990 | |
| 7 | The Genius That Was China: Empires in Collision (2) | 27 de mar. de 1990 | |
| 8 | The Genius That Was China: The Threat from Japan (3) | 3 de abr. de 1990 | |
| 9 | The Genius That Was China: Will the Dragon Rise Again? (4) | 10 de abr. de 1990 | |
| 10 | The KGB, The Computer and Me | 2 de out. de 1990 | |
| 11 | Neptune's Cold Fury | 9 de out. de 1990 | |
| 12 | To Boldly Go... | 16 de out. de 1990 | |
| 13 | Poisoned Winds of War | 23 de out. de 1990 | |
| 14 | The Blimp is Back! | 30 de out. de 1990 | |
| 15 | Earthquake! | 6 de nov. de 1990 | |
| 16 | Killing Machines | 13 de nov. de 1990 | |
| 17 | Can the Elephant Be Saved? | 20 de nov. de 1990 | |
| 18 | We Know Where You Live | 27 de nov. de 1990 | |
| 19 | In the Land of the Llamas | 4 de dez. de 1990 | |
| 20 | What's Killing the Children? | 18 de dez. de 1990 |