| 
                                    
                                        gptkbp:instanceOf
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:research_institute
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:architect
                                    
                                 | 
                                
                                    
                                        
                                            
                                            Peter Pearce
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:area
                                    
                                 | 
                                
                                    
                                        
                                            
                                            3.14 acres
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:built
                                    
                                 | 
                                
                                    
                                        
                                            
                                            1987-1991
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:contains
                                    
                                 | 
                                
                                    
                                        
                                            
                                            human habitat
                                        
                                        
                                         
                                    
                                        
                                            
                                            technosphere
                                        
                                        
                                         
                                    
                                        
                                            
                                            savanna biome
                                        
                                        
                                         
                                    
                                        
                                            
                                            rainforest biome
                                        
                                        
                                         
                                    
                                        
                                            
                                            desert biome
                                        
                                        
                                         
                                    
                                        
                                            
                                            marsh biome
                                        
                                        
                                         
                                    
                                        
                                            
                                            ocean biome
                                        
                                        
                                         
                                    
                                        
                                            
                                            agricultural biome
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:enclosed_area
                                    
                                 | 
                                
                                    
                                        
                                            
                                            1.27 hectares
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:enclosed_volume
                                    
                                 | 
                                
                                    
                                        
                                            
                                            7,200,000 cubic feet
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:featuredIn
                                    
                                 | 
                                
                                    
                                        
                                            
                                            books
                                        
                                        
                                         
                                    
                                        
                                            
                                            documentaries
                                        
                                        
                                         
                                    
                                        
                                            
                                            news articles
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:features
                                    
                                 | 
                                
                                    
                                        
                                            
                                            largest closed ecological system ever created
                                        
                                        
                                         
                                    
                                        
                                            
                                            air-tight structure
                                        
                                        
                                         
                                    
                                        
                                            
                                            carbon dioxide cycling studies
                                        
                                        
                                         
                                    
                                        
                                            
                                            energy exchange studies
                                        
                                        
                                         
                                    
                                        
                                            
                                            self-contained biomes
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:first_mission_duration
                                    
                                 | 
                                
                                    
                                        
                                            
                                            2 years
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:fundedBy
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Ed_Bass
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:hasGuidedTours
                                    
                                 | 
                                
                                    
                                        
                                            
                                            yes
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:latitude
                                    
                                 | 
                                
                                    
                                        
                                            
                                            32.5722° N
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:location
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Oracle,_Arizona,_United_States
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:longitude
                                    
                                 | 
                                
                                    
                                        
                                            
                                            110.8367° W
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:managedBy
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:University_of_Arizona
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:material
                                    
                                 | 
                                
                                    
                                        
                                            
                                            steel and glass
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:namedAfter
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Biosphere_1_(Earth)
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:notableMission
                                    
                                 | 
                                
                                    
                                        
                                            
                                            1991-1993 closed system mission
                                        
                                        
                                         
                                    
                                        
                                            
                                            1994 closed system mission
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:number_of_people_in_first_mission
                                    
                                 | 
                                
                                    
                                        
                                            
                                            8
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:opened
                                    
                                 | 
                                
                                    
                                        
                                            
                                            1991
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:owner
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:University_of_Arizona
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:previousOwner
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Columbia_University
                                        
                                         
                                    
                                        
                                            
                                            Biosphere 2 Center, Inc.
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:purpose
                                    
                                 | 
                                
                                    
                                        
                                            
                                            ecological research
                                        
                                        
                                         
                                    
                                        
                                            
                                            closed ecological system experiment
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:second_mission_duration
                                    
                                 | 
                                
                                    
                                        
                                            
                                            6 months
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:UNESCOWorldHeritageSite
                                    
                                 | 
                                
                                    
                                        
                                            
                                            no
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:usedFor
                                    
                                 | 
                                
                                    
                                        
                                            
                                            education
                                        
                                        
                                         
                                    
                                        
                                            
                                            public outreach
                                        
                                        
                                         
                                    
                                        
                                            
                                            climate change research
                                        
                                        
                                         
                                    
                                        
                                            
                                            ecological engineering
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:website
                                    
                                 | 
                                
                                    
                                        
                                            
                                            https://biosphere2.org/
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:bfsParent
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Greenhouse_Two
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:bfsLayer
                                    
                                 | 
                                
                                    
                                        
                                            
                                            8
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        https://www.w3.org/2000/01/rdf-schema#label
                                    
                                 | 
                                
                                    
                                        
                                            
                                            Biosphere 2 complex
                                        
                                        
                                         
                                    
                                 |