INSTRUCTIONS: Find a space that is devoid of city noise: no faint rush of traffic in the background, no voices of random passing strangers, no bass thump from a distant stereo. Quiet. (Of course natural sounds are hopefully to be expected: perhaps birds, perhaps animals passing through underbrush, perhaps wind passing thorugh leaves, perhaps a brook; but no man-made noise.)

Record your location as proof; if possible, a recording of the quiet would be lovely.