Communication plays a key role in man's development from primitive hunter to sophisticated technician.
The story of primates and their adaptation to forest living unfolds in a journey from Madagascar to Malaysia.
The balance of nature mediates the food supply for carnivores and herbivores.
David Attenborough traces the possible evolution of anteaters, moles, bats, porpoises and whales from a tiny Mesozoic mammal.
Recounting mammal development, David Attenborough spotlights the platypus, wombat, Tasmanian devil, kangaroo and opossum.
David Attenborough illustrates the varied uses and advantages of the light and flexible feather.
David Attenborough explores the ability of iguanas and giant tortoises to survive on the arid Galapagos Islands.
Film captures the coelacanth, a fish, believed to be extinct until 1938, and other ancestors of amphibians.
The 30,000 varieties of fish are able to live under the most harsh conditions through species adaptation.
Some flowers must attract insects to cross-fertilize.
David Attenborough considers the survival of the first life on land: mosses, ferns, millipedes and dragonflies.
Marine invertebrates fall into three distinct groups: echinoderms, mollusks, and segmented creatures.
David Attenborough investigates the factors permitting the four million different forms of life on earth.