S23 E1: Anastasia Dead or Alive?

S23 E2: Venus Unveiled

S23 E3: Hawaii Born of Fire

S23 E4: The Doomsday Asteroid

S23 E5: Lightning!

S23 E6: Hunt for the Serial Arsonist

S23 E7: Treasures of the Great Barrier Reef

S23 E8: Race to Catch a Buckyball

S23 E9: Can Buildings Make You Sick?

S23 E10: Terror in the Mine Fields

S23 E11: The Day the Earth Shook

S23 E12: B-29 Frozen in Time

S23 E13: Plague Fighters

S23 E14: War Machines of Tomorrow

S23 E15: Kidnapped by U.F.O.'s?

S23 E16: Flood!

S23 E17: Dr. Spock the Baby Doc

S23 E18: Warriors of the Amazon

S23 E19: Bombing of America