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[[File:Whole world - land and oceans 12000.jpg|thumb|333px|right]]

[[File:Whole world - land and oceans 12000.jpg|thumb|333px|right]]

When people say "the '''world'''" they usually mean [[Planet Earth]]. [[Human|Humans]] and all other known living things live in this world. Sometimes "world" means another [[planet]].  

When people say "the '''world'''" they usually mean [[Earth]]. [[Human|Humans]] and all other known living things live in this world. Sometimes "world" means another [[planet]].  

Before people discovered that Earth is a planet, they often used "World" to mean "[[Universe]]". They still sometimes use it to mean all humans or all [[civilization]]. For example, they may say "end of the world" to mean the end of history or humanity.  

Before people discovered that Earth is a planet, they often used "World" to mean "[[Universe]]". They still sometimes use it to mean all humans or all [[civilization]]. For example, they may say "end of the world" to mean the end of [[history]] or humanity.  

Sometimes they mean a small part of Earth such as [[Western world]], [[Islamic world]], [[third world]], [[new world]], or [[ancient world]].

Sometimes they mean a small part of Earth such as [[Western world]], [[Islamic world]], [[third world]], [[new world]], or [[ancient world]].