第 1 季 共 13 集
播出时间：1979年1月17日
第 1 集 The Infinite Variety
播出时间：1979年1月17日
This episode explores the variety of nature as a whole, from the South American rainforest's to the shores of Australia.
第 2 集 Building Bodies
播出时间：1979年1月24日
This episode explores the various sea-living invertebrates, form the shores of Morocco to Delaware Bay.
第 3 集 The First Forests
播出时间：1979年1月31日
Over 400 million years ago, tiny plants began to invade the land, followed by the first animals - the ancestors of scorpions, millipedes and insects
第 4 集 The Swarming Hordes
播出时间：1979年2月7日
The role of a few of the millions of insect species, some of which have developed extremely close relationships with plants. Insects pollinate flowers and in some cases neither flower nor insect can survive without the other.
第 5 集 The Conquest of the Waters
播出时间：1979年2月14日
A look at some of the 30,000 species of fish which exist in populations of billions. They can fly, produce electricity, survive in hot soda lakes or under the Antarctic ice. Some, like the salmon, even migrate across oceans and up waterfalls
第 6 集 The Invasion of the Land
播出时间：1979年2月21日
Some 350 million years ago, evolution reached one of its most crucial stages when fish crawled from water onto the land and became amphibians. Today, newts, salamanders, toads and frogs still survive in great quantities, and there is even one species of frog where the male gives birth from its mouth!
第 7 集 Victors of the Dry Lands
播出时间：1979年2月28日
A look at the history of reptiles, the first back-boned creatures to solve the problems of living high and dry on the land. Their waterproofed skin and sealed eggs enabled the mighty reptiles to rule the world
第 8 集 Lords of the Air
播出时间：1979年3月7日
We examine the uses and advantages of birds' unique possession - the feather. Feathers are insulators; they provide the surface of the most perfect aerofoils known - bird's wings; and they play a central role in courtship
第 9 集 The Rise of the Mammals
播出时间：1979年3月14日
A look at the evolution of mammals from reptiles 200 million years ago. This remarkable transition involved the development of mechanisms for regulating body temperature, for allowing the young to develop in the womb and for suckling newborns. Attenborough also explores the South American origins of marsupials and their colonization of Australia
第 10 集 Theme and Variations
播出时间：1979年3月21日
A look at some of the huge variety of mammals. Bats number over a thousand species, many hunt insects, some sip nectar, drink blood, and even catch fish. Contrast those which use sonar with the great whales that sing, the star-nosed mole and the giant anteater, and the potential variations become dramatically clear
第 11 集 The Hunters and the Hunted
播出时间：1979年3月28日
Explore the eternal duel between the hunters and the hunted - one of the driving forces of evolution. As the hunters develop speed and cunning, the prey becomes increasingly fast and wary in order to stay alive. Nowhere is this seen better than on the plains of East Africa
第 12 集 Life in the Trees
播出时间：1979年4月4日
David Attenborough's now legendary encounter with young gorillas is featured in this episode as he looks at the history of primates, whose ancestors sought their fortune in the treetops. There they developed binocular vision for accurately judging distances, and the ability to grasp trees with a firm grip. The group includes dazzling gymnasts, deafening choristers and highly cultured monkeys
第 13 集 The Compulsive Communicators
播出时间：1979年4月11日
A look for crucial clues that help to explain how and why we have come to dominate life on Earth. He traces back the African origins of humans to nearly three million years ago, and along the way he goes into caves in Southern France where stone-age people created imaginative paintings of ice-age animals. He also travels to Papua New Guinea to find some hunter-gatherers who have never before set eyes on white people
