1 The Infinite Variety55 min · 16 Jan 1979 2 Building Bodies54 min · 23 Jan 1979 3 The First Forests54 min · 30 Jan 1979 4 The Swarming Hordes55 min · 6 Feb 1979 5 Conquest of the Waters55 min · 13 Feb 1979 6 Invasion of the Land55 min · 20 Feb 1979 7 Victors of the Dry Land55 min · 27 Feb 1979 8 Lords of the Air54 min · 6 Mar 1979 9 The Rise of the Mammals54 min · 13 Mar 1979 10 Theme and Variations53 min · 20 Mar 1979 11 The Hunters and Hunted55 min · 27 Mar 1979 12 Life in the Trees55 min · 3 Apr 1979 13 The Compulsive Communicators54 min · 10 Apr 1979