Silent Running

In a future where all flora is extinct on Earth, an astronaut is given orders to destroy the last of Earth's botany, kept in a greenhouse aboard a spacecraft.

Director: Douglas Trumbull

Cast:Bruce Dern , Cliff Potts , Ron Rifkin , Jesse Vint , Mark Persons , Steven Brown , Cheryl Sparks , Larry Whisenhunt , Joseph Campanella , Roy Engel