Silence Like Scouring Sand.

The article explores the mission of Gordon Hempton of Olympic National Park to record the natural sounds of the world before they are drowned out by human noise in the rainforest along the Hoh River in Washington. It outlines the "One Square Inch of Silence" campaign established by Hempton, which aims to protect the silence of the national parks. Moreover, it mentions the widest diversity of soundscapes discovered by Hempton within the national park system.