Illumination and darkness: Laurie Taylor is joined by Tim Edensor, Reader in Cultural Geography at Manchester Metropolitan University, and author of a study into the ways in which light and dark produce everyday life and the stories we tell about ourselves. In examining the modern city as a space of fantasy through electric illumination, he considers how we are seeking-and should seek-new forms of darkness in reaction to the perpetual glow of urban lighting. They're joined by Robert Shaw., lecturer in geography at Newcastle University, who has studied the relationship between night and society in contemporary cities. He claims that the economic activity of the 'daytime' city has so advanced into the night, that other uses of the night as a time for play, for sleep or for escaping oppression have come increasingly under threat.

Producer: Jayne Egerton.