S5 E1: In The Event of Catastrophe

S5 E2: The Green Machine

S5 E3: Blueprints in the Bloodstream

S5 E4: One Small Step

S5 E5: The Final Frontier

S5 E6: BaMiki BaNdula: Children of the Forest

S5 E7: Trial of Denton Cooley

S5 E8: The Great Wine Revolution

S5 E9: The Case of the Ancient Astronauts

S5 E10: The Mind Machines

S5 E11: Icarus' Children

S5 E12: Still Waters

S5 E13: Battle for the Acropolis

S5 E14: The Road to Happiness. : The Life and Times of Henry Ford

S5 E15: Laser : Light of the 21st Century

S5 E16: Insect Alternative

S5 E17: The Desert's Edge

S5 E18: The Tsetse Trap

S5 E19: Memories From Eden

S5 E20: A Whisper from Space

S5 E21: Alaska: The Closing Frontier