S17 E1: Poison in the Rockies

S17 E2: Race for the Top

S17 E3: Disguises of War

S17 E4: The Bomb's Lethal Legacy

S17 E5: The Big Spill

S17 E6: The Genius That Was China: Rise of the Dragon

S17 E7: The Genius That Was China: Empires in Collision

S17 E8: The Genius that Was China: The Threat from Japan

S17 E9: The Genius That Was China: Will the Dragon Rise Again?

S17 E10: The KGB, The Computer and Me

S17 E11: Neptune's Cold Fury

S17 E12: To Boldly Go...

S17 E13: Poisoned Winds of War

S17 E14: The Blimp is Back!

S17 E15: Earthquake!

S17 E16: Killing Machines

S17 E17: Can the Elephant Be Saved?

S17 E18: We Know Where You Live

S17 E19: In the Land of the Llamas

S17 E20: What's Killing the Children?