Egyptian mummies are perennially popular with visitors to museums – but what is their relevance in the twenty-first century? What can we learn from the study of these ancient remains? Mummies are an unparalleled source of scientific data, addressing a host of questions about life in one of the most highly developed societies of the ancient world. Although the ancient Egyptians left many written records, these tell only part of the story, and researchers rely heavily on human remains to complete the picture. These throw light on many important issues about which the inscriptions are often silent: physical anthropology, family relationships, life expectancy, nutrition and health, disease and the causes of death. They also of course provide a unique insight into the fascinating and complex processes of mummification; including not only the artificial preservation of the corpse, but also the ritual elements which played such an important part: the placing of amulets, the putting on of wrappings and the equipping of the body with religious texts and images. For many years, the only way to extract this data from Egyptian mummies was to unwrap them – a process both destructive and irreversible.