The complete series presented by David Attenborough, exploring the extraordinary world of insects and invertebrates. For every one human being, there are 200 million insects, and our planet's ecology is entirely dependent on their existence. In this series, Attenborough uses groundbreaking and sophisticated new camera techniques to investigate how insects first developed, how they adapted to winged flight, how silk became essential to invertebrate survival, and how insects reproduce and managed to develop the most complex social groups in the animal kingdom. Episodes are: 'Invasion of the Land'; 'Taking to the Air'; 'The Silk Spinners'; 'Intimate Relations'; and 'Supersocieties'.