Oomphel in the Sky - H. Beam Piper

Natives of the distant planet of Kwannon believe that their world is about to end, and in preparing for the apocalypse, may be unnecessarily bringing about their own demise. The planetary government can’t overcome its own bureaucracy to help them, and the military is overwhelmed. Can a single newsman change the course of a whole people, and save their world? (by Mark Nelson)