The man who identified the quietest place in the Lower 48 - dubbed the "One Square Inch of Silence" - is going deaf. This Olympic Peninsula fellow campaigned against noise pollution, particularly at his symbolic spot in the Hoh Rain Forest in Olympic National Park. The self-described "Sound Tracker" is now in a race to edit his life's work before he loses more of his hearing.
For Gordon Hempton, it started with a common experience -- having to keep saying, "What, what?" Then the stakes got higher.