A selection of the most distinctive BBC documentaries produced in the last twelve months.

One of the most baffling problems in biology today is the mysterious virus. Yet out of its study may come a deeper understanding of the nature of life itself, and perhaps an answer to some forms of cancer.
Dr. Kingsley Sanders, Director of the Medical Research Council's Virus Unit and a number of his colleagues describe the intensive efforts now being made to seek understanding of particles smaller and simpler than any known organism.
Introduced by Raymond Baxter.
BBC-tv Science and Features presentation
First transmission on February 25