The Documentary: Hush

WORLD SERVICE, 10.06PM

The excellent radio producer Cathy Fitzgerald has a gift for sound, but in this wonderful and unusual documentary she focuses on silence. She meets George Michelsen Foy, author of Zero Decibels: The Quest for

Absolute Silence, and hears from American park rangers who try to preserve the naturally quietest places on Earth to keep them free from human sound pollution. Most thrillingly, the documentary includes beautiful and ethereal recordings of these places, rich in the sounds of animals and plants completely free of human interference.