Making sense of noise: Part 2 of 2 - In pursuit of silence

Join George Prochnick as he escapes the racket of New York City on a profound quest for the quiet. His book, In Pursuit of Silence: Listening for Meaning in a World of Noise, encounters the deaf architecture movement, surprises in the stillness of a Trappist monastery, and the Self unmasked by silence. Corinne Podger reports.