Thanatology is the science which deals with -
Thanatology or deathlore is the scientific study of death and the losses brought about as a result. It investigates the mechanisms and forensic aspects of death, such as bodily changes that accompany death and the post-moem period, as well as wider psychological and social aspects related to death. Ref : Internet
Death inits aspects
Identification of the living
Solving paternity of the child
Detection of life
Social science, Mental health & Genetics