“Geography is the study of human-environment interactions,” Larsen says of his discipline. It covers activity ranging from physical geography (e.g., wind erosion, weather patterns), techniques (e.g., modeling air pollution with GIS to understand the interactions between human and environment), and human geography. Human geographers focus on the political, economic, cultural, urban, and regional elements of human-environment interactions, looking at “the impact of the environment on human behavior,” as well as the “impact of human activity on the environment.” Within this subfield Larsen specializes in cultural geography, seeking to understand traditional land-use practices, naming practices, and sense of place.