Ashes to ashes, dust to dust, or in more cases, through the stomach of a maggot or beetle. Bodies deteriorate on their own, but nature provides a lot of help. Bug and scavenger activity can tell a lot about a corpse. Using entomology and environmental information, a skilled investigator can determine relative time of death, if a corpse has been relocated, and many other key facts. Learn how nature works from the inside out.