Silent Running (1972)

Silent Running
Adventure, Science Fiction, Drama
After the entire flora goes extinct, ecologist Lowell maintains a greenhouse aboard a space station for the future with his android companions. However, he rebels after being ordered to destroy the greenhouse in favor of carrying cargo, a decision that puts him at odds with everyone but his mechanical companions.
Starring
Bruce Dern, Cliff Potts, Ron Rifkin, Jesse Vint, Mark Persons, Steven Brown, Cheryl Sparks, Larry Whisenhunt, Joseph Campanella, Roy Engel
Directed By
Douglas Trumbull