- 13 - 1Halley's Comet: Once in a Lifetime Jan. 21, 1986
- 13 - 2Goddess of the Earth Jan. 28, 1986
- 13 - 3Horsemen of China Feb. 04, 1986
- 13 - 4Life's First Feelings Feb. 11, 1986
- 13 - 5The Case of the Frozen Addict Feb. 18, 1986
- 13 - 6Toxic Trials Feb. 25, 1986
- 13 - 7Skydive to the Rain Forest Mar. 04, 1986
- 13 - 8Return of the Osprey Mar. 11, 1986
- 13 - 9The Rise of a Wonder Drug Mar. 18, 1986
- 13 - 10When Wonder Drugs Don't Work Mar. 25, 1986
- 13 - 11Visions of Star Wars Apr. 22, 1986
- 13 - 12The Search for the Disappeared Oct. 14, 1986
- 13 - 13The Planet that Got Knocked on its Side Oct. 21, 1986
- 13 - 14High-Tech Babies Nov. 04, 1986
- 13 - 15Can AIDS Be Stopped? Nov. 11, 1986
- 13 - 16Is Anybody Out There? Nov. 18, 1986
- 13 - 17Mystery of the Animal Pathfinders Nov. 25, 1986
- 13 - 18Are You Swimming in a Sewer? Dec. 02, 1986
- 13 - 19Sail Wars! Dec. 09, 1986
- 13 - 20Leprosy Can Be Cured! Dec. 16, 1986
- 13 - 21How Babies Get Made Jan. 13, 1987