Since 1997, the thrust of Prof. Hunt’s work has been centered on sustainable technology which minimizes human contributions to climate change. His research emphasis is in the areas of energy-efficient light sources, cathodoluminescent phosphor technology, and issues relating to the color quality and the human experience of artificial light sources. Since 2010, a major focus has been examination of the human response, physiological and emotive, to artificial light. He is a Founding Member of the Blue Light Group. He is a frequent invited speaker on topics associated with energy consumption and color quality of light sources and their impact on climate change and human health.