Listener Kathleen Herring is one of many writers who suggested that the ultimate Summer Sound is that of loons on a northern lake. Sponsor Message ROBERT SIEGEL, host: We've been giving you a chance ...

MINNESOTA, USA — "Imagine now, a clear summer evening in the north woods. Above you, the bands of the Milky Way framed by the dark spindly boughs of spruce and fir. And cutting though the stillness ...