Archaeology is the art and science of studying the ancient and recent human past through material remains. Archaeology is central to examining, recovering and preserving evidence and artefacts from past human cultures across space and time. It remains a highly interdisciplinary field; intersecting with the humanities, social, biological and physical sciences. While survey, excavation and analysis of finds remain a basic part of archaeological work, the essence of Archaeology is to broaden and deepen understanding of human cultures. This is achieved through problem solving and sophisticated use of evidence and theoretical argument. Archaeology specialties include: Prehistoric Archaeology (study of past cultures with no written language); Underwater Archaeology (study of remains of human activity beneath the surface of water bodies) and Historical Archaeology (study of cultures that existed during periods of recorded history). Historical Archaeology is further divided into Classical Archaeology (Ancient Greece & Rome) and Biblical Archaeology (Middle East). Other specialties include Urban Archaeology, Industrial Archaeology, Bio-Archaeology, Cultural Resource Management Archaeology and Forensic Archaeology