1 - 1The Building of the Earth Jan. 19, 1984- 1 - 2The Frozen World Jan. 26, 1984
- 1 - 3The Northern Forests Feb. 02, 1984
- 1 - 4Jungle Feb. 16, 1984
- 1 - 5Seas of Grass Feb. 23, 1984
- 1 - 6Baking Deserts Feb. 23, 1984
- 1 - 7The Sky Above Mar. 08, 1984
- 1 - 8Sweet Fresh Water Mar. 15, 1984
- 1 - 9The Margins of the Land Mar. 22, 1984
- 1 - 10Worlds Apart Mar. 29, 1984
- 1 - 11The Open Ocean Apr. 05, 1984
- 1 - 12New Worlds Apr. 12, 1984
