Myths are orally transmitted stories that are believed by their originating cultures and attempt to explain phenomena that cannot be easily explained. Myths exist in multiple versions and vary in details between tellings. Scholars from various fields like folklore, anthropology, psychology, and mythology have studied myths to understand the values, beliefs, and fears of cultures as reflected in their myths. Common elements in myths across cultures include explanations of creation, the structure of the universe, life and death, supernatural beings, disasters, heroes and tricksters, the relationship between humans and animals/plants, and concepts of the body, soul, marriage, and social norms.