What is the longest a person has gone without water?
                                
                                
                                •
                                
                                
                        
                                    
                                    4 min read                                
                            
                                In 1979, Austrian Andreas Mihavecz survived for 18 days without food or water after being accidentally forgotten in a police holding cell. This extraordinary feat raises the question: what is the longest a person has gone without water and what factors influence human survival in such extreme conditions?