Superman: Earth One its collapse. Zod addresses the United Nations, stating that the House of El caused the planet Krypton to explode, and that Superman is a threat. Zod persuades the delegates that he is an ally and wants to help them kill Superman. Lois receives a phone call from her uncle and learns that Zod is responsible for the bridge's collapse, after which she tries to warn Superman. Zod reveals that he possesses a supply of kryptonite in his ship, from whose radiation his lead-lined skin-suit protects him. He intends to kill Superman, but Superman uses his knowledge of chemistry to cause
Superman hope. Clark works as a newspaper journalist. In the earliest stories, he worked for "The Daily Star", but the second episode of the radio serial changed this to the "Daily Planet". In comics from the early 1970s, Clark worked as a television journalist (an attempt to modernize the character). However, for the 1978 movie, the producers chose to make Clark a newspaper journalist again because that was how most of the public thought of him. The first story in which Superman dies was published in "Superman" #149 (1961), in which he is murdered by Lex Luthor by means of kryptonite.