Broadly speaking, anthropologists study humanity. From the earliest ancestors of humanity to the ways that we organize, govern, and even feed ourselves, anthropologists help to explain what it is to be human. In fact, many anthropologists also double as archaeologists, helping to explain the world of the past without the benefit of written records.
Due to the theoretical elements at play in a great deal of anthropology, that means many anthropologists are college professors. However, do not think that anthropology is only for the ivory tower – plenty of other anthropologists work to help explain even modern cultures to people.