SILENT RUNNING opens. Directed by Douglas Trumbull. Written by Deric Washburn, Michael Cimono and Steven Bochco. On a cargo ship plying deep space, astronaunt/botanist Bruce Dern is instructed to destroy the vessel's huge bio-dome containing what's left of post-apocalypse Earth's precious vegetation. Eco-themed, dystopian sci-fi. With Cliff Potts, Ron Rifkin and Jesse Vint.