Soylent Green is a 1973 American Metrocolor science fiction film in Panavision directed by Richard Fleischer and starring Charlton Heston, Leigh Taylor-Young, and, in his final film, Edward G. Robinson. The film combines the police procedural and science fiction genres, depicting the investigation into the murder of a wealthy businessman in a dystopian future suffering from pollution, overpopulation, depleted resources, poverty, dying oceans, and all year humidity due to the greenhouse effect. Much of the population survives on processed food rations, including "soylent green".