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• S43.E1 ∙ Secret Tunnel Warfare
• S43.E2 ∙ Life's Rocky Start
• S43.E3 ∙ Mystery Beneath the Ice
• S43.E4 ∙ Himalayan Megaquake
• S43.E5 ∙ Creatures of Light
• S43.E6 ∙ Memory Hackers
• S43.E7 ∙ Iceman Reborn
• S43.E8 ∙ Rise of the Robots
• S43.E9 ∙ Vikings Unearthed
• S43.E10 ∙ Can Alzheimer's Be Stopped?
• S43.E11 ∙ Wild Ways
• S43.E12 ∙ Operation Lighthouse Rescue
• S43.E13 ∙ Bombing Hitler's Supergun
• S43.E14 ∙ 15 Years of Terror
• S43.E15 ∙ School of the Future
• S43.E16 ∙ Great Human Odyssey
• S43.E17 ∙ Super Tunnel
• S43.E18 ∙ Treasures of the Earth: Gems
• S43.E19 ∙ Treasures of the Earth: Metals
• S43.E20 ∙ Treasures of the Earth: Power