Soundtracker: Amazon (4'54" ) By Nick Sherman. Over 20 years ago, Gordon Hempton (a.k.a. The Soundtracker) visited Brazil's Amazon to record the sounds of dawn. He recently returned. This is what it sounded like. Segment from TEDx Amazonia.
Gordon Hempton: One day,Gordon Hempton, slept on the grass. A storm fell and he continued asleep in the rain. That was the day he became fascinated with the sounds of nature. For 25 years, his job is to record sounds that people have forgotten to hear. He warns us: silence is becoming extinct. Ref: TEDx Amazonia