Archaeology is the study of past human culture and behavior. It studies past human behavior through the examination of material remains of previous human societies, including the fossils of humans, food remains, buildings, and human artifacts such as tools, pottery, and jewelry.
Generally, archaeology is thought to involve prehistoric cultures. However, historical archaeology studies historical, literate cultures such as ancient Greece and Mesopotamia. Other specializations in archaeology include bioarchaeology (the study of human skeletal remains) and geoarchaeology (the use of geological knowledge to further studies in archaeology: ie. sediment deposits, the use of GIS, etc).
Archeology is a branch of anthropology and is related to paleontology, human geography, and history.