The discipline of anthropology utilizes a four-field approach to the study of humans. Physical Anthropology studies humans and their primate relatives in terms of evolution, biology, and behavior. Archaeology studies cultural evolution, elucidating past human societies from their beginnings to the recent development of complex societies. Anthropological Linguistics studies languages cross-culturally, including topics such as language structure and socio-cultural dimensions of language use. Cultural Anthropology studies the cultural similarities and differences among diverse societies around the world. Subsumed under cultural anthropology are such topics as religion, urban anthropology, gender studies, economic and political anthropology, medical anthropology, and anthropology of globalization. The Anthropology Department at Lehman focuses on research and undergraduate teaching, with a strong connection to the Ph.D. Program in Anthropology at the CUNY Graduate School.