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