Anthropology is the study of human behavior and multicultural diversity. That exploration of what it means to be human ranges from the study of culture and social relations, to human biology and evolution, to languages, to music, art and architecture, and to vestiges of human habitation. It considers such fascinating questions as how peoples' behavior changes over time, why and how people from distant parts of the world and dissimilar cultures are different and the same, and how the human species has evolved over millions of years.