Underskog

The film overlays the police procedural and science fiction genres as it depicts the investigation into the murder of a wealthy businessman in a dystopian future suffering from pollution, overpopulation, depleted resources, poverty, dying oceans, and a hot climate due to the greenhouse effect. Much of the population survives on processed food rations, including “soylent green”.
The film, which is loosely based upon the 1966 science fiction novel Make Room! Make Room!, by Harry Harrison, won the Nebula Award for Best Dramatic Presentation and the Saturn Award for Best Science Fiction Film in 1973.