Sociologists Joanne Entwistle, Don Slater, and Mona Sloane look at the fundamental role of light in social life. Lighting has a lot to say about social structures, yet many of these assumptions remain unchallenged. By investigating lighting design, social scientists can understand how social relationships are linked to technology and the wider built environment. In conjunction with the research, the team have recently released two videos which further explore the aims and outcomes of their recent Urban Lightscapes/Social Nightscapes project.