- Season 17 Episode 1
First Air Date : Jan 01, 1970
Last Air Date : Jan 01, 1970
Runtime : min.
Genre :
Stars :
Quality : 
- Eps. 1 : Poison in the Rockies1990-01-09
- Eps. 2 : Race for the Top1990-01-23
- Eps. 3 : Disguises of War1990-02-06
- Eps. 4 : The Bomb's Lethal Legacy1990-02-13
- Eps. 5 : The Big Spill1990-02-27
- Eps. 10 : The KGB, The Computer and Me1990-10-02
- Eps. 11 : Neptune's Cold Fury1990-10-09
- Eps. 12 : To Boldly Go...1990-10-16
- Eps. 13 : Poisoned Winds of War1990-10-23
- Eps. 14 : The Blimp is Back!1990-10-30
- Eps. 15 : Earthquake!1990-11-06
- Eps. 16 : Killing Machines1990-11-13
- Eps. 17 : Can the Elephant Be Saved?1990-11-20
- Eps. 18 : We Know Where You Live1990-11-27
- Eps. 19 : In the Land of the Llamas1990-12-04
- Eps. 20 : What's Killing the Children?1990-12-18
