| Main Article | Discussion | Related Articles [?] | Bibliography [?] | External Links [?] | Citable Version [?] | | | | | | | | This editable Main Article is under development and subject to a disclaimer. [edit intro] (CC) Photo: Sverrir Thor The eruption of a volcano -- a natural spectacle of the kind that always fascinates human observers. Nature is a concept used as a complement to culture and, historically, religion. It encompasses the physical, chemical and biological environment in which we live, our planet as a whole, and extends as far as the universe.