After the end of all botanical life on Earth, ecologist Freeman Lowell (Bruce Dern) maintains a greenhouse on a space station in order to preserve various plants for future generations. Assisted by three robots and a small human crew, Lowell rebels when he is ordered to destroy the greenhouse in favour of carrying cargo, a decision that puts him at odds with everyone but his mechanical companions. As a result, Lowell and his robots are forced to do anything necessary to keep their invaluable greenery alive.

With its Joan Baez soundtrack, bizarre sound effects and ecological leanings, Silent Running is the ultimate hippy-era sci-fi.

"One of my all time favourite movies and one of the greatest sci-fi films ever...made as a reaction to Kubrick's much more celebrated 2001 and for my money it's the superior film." - Mark Kermode