Ater 2001, dominant theme of science fiction films shifted from the adventures of space travelTo the probiems created on earth by man’s mismanagement of the natural environment and the abuse of technology by a totalitarian state, Overpopulation and the accompanying shortages of food prompt the state to impose extraordinaryc controls on its citizens. No fewer than twen-nine films were made around this theme in the years between 1970 and 1977, including Survivors and Chronicles.