The Library of Lost Maps by James Cheshire, Professor of Geographic Information and Cartography, tells the story of the discovery of a treasure-trove at the heart of University College London. In a long-forgotten room James found thousands of maps and atlases. This abandoned archive reveals how maps have traced the contours of the world, inspiring some of the greatest scientific discoveries, as well as leading to terrible atrocities and power grabs.

But maps have not always been used to navigate or reveal the world, according to a new exhibition at the British Library on Secret Maps (from 24 October 2025 to 18 January 2026). Jerry Brotton, Professor of Renaissance Studies at Queen Mary University of London, and author of Four Points of the Compass, explains how mysterious maps throughout history have been used to hide, shape and control knowledge.

The biographer Jenny Uglow celebrates a different kind of mapping in her new book, A Year with Gilbert White: The First Great Nature Writer. In 1781 the country curate Gilbert White charted the world around him – from close observation of the weather, to the migration of birds to the sex lives of snails and the coming harvest – revealing a natural map of his Hampshire village.

Producer: Katy Hickman