Jim Clifford is an environmental historian in the Department of History at the University of Saskatchewan in Canada. He completed his PhD at York University in Toronto in 2011. His research focuses on London and the British World during the long nineteenth century. He uses digital methods including historical GIS and text mining to explore the environmental and social history of industrialization in London and the global environmental consequences of Britain's growing industrial economy. Clifford also has an interest in the role of historians in providing context and contributing to solutions for the many challenges facing today’s cities, societies, and environments. To this end, he is a founding member of ActiveHistory.ca.