Sue Lawley's guest this week is Dr. Jane Goodall. She had no formal scientific qualifications when she first went to Africa to study the Gombe chimpanzees. But it was this lack of preconceptions which made her so successful as a naturalist. Watching chimps use sticks to extract termites from their mounds she realised that she was about to smash the assumption that only humans used tools. Now, forty years after she first stepped into the bush, she describes how she has halted her patient study of the chimpanzees to fight for their survival.

[Taken from the original programme material for this archive edition of Desert Island Discs]

Favourite track: Under the Milk Wood by Richard Burton