Gerontology deals with the scientific study of old age, the process of ageing, and the particular problems of old people. It focuses on the biological, psychological, cognitive, cultural and social aspects of ageing. Some of its subfields are biogerontology, social gerontology, environmental gerontology and jurisprudential gerontology. Biogerontology is associated with the biological aging process and its evolutionary origins. Social gerontology is a specialization in the study and working with older adults. Environmental gerontology deals with the interaction between aging persons and their social and physical environments. Jurisprudential gerontology is concerned with the relationship between laws and the aging process. This book traces the progress of this field and highlights some of its key concepts and applications. It will help the readers in keeping pace with the rapid changes in gerontology. Some of the diverse topics covered in this book address the varied branches that fall under this category.