If current server doesn't work please try other server below.

• S13.E1 ∙ Halley's Comet: Once in a Lifetime
• S13.E2 ∙ Goddess of the Earth: Gaia
• S13.E3 ∙ Horsemen of China
• S13.E4 ∙ Life's First Feelings
• S13.E5 ∙ The Case of the Frozen Addict
• S13.E6 ∙ Toxic Trials
• S13.E7 ∙ Skydive to the Rain Forest
• S13.E8 ∙ Return of the Osprey
• S13.E9 ∙ The Rise of a Wonder Drug
• S13.E10 ∙ When Wonder Drugs Don't Work
• S13.E11 ∙ Visions of Star Wars
• S13.E12 ∙ The Search for the Disappeared
• S13.E13 ∙ The Planet that Got Knocked on its Side
• S13.E14 ∙ High-Tech Babies
• S13.E15 ∙ Can AIDS Be Stopped?
• S13.E16 ∙ Is Anybody Out There?
• S13.E17 ∙ The Mystery of the Animal Pathfinders
• S13.E18 ∙ Are You Swimming in a Sewer?
• S13.E19 ∙ Sail Wars!
• S13.E20 ∙ Leprosy Can Be Cured!
• S13.E21 ∙ How Babies Get Made