Bernie Krause is cool. Really cool. He holds a PHD in acoustic biology, he played synth on a bunch of motown records, in the 60's he put out an electronic music education record, introduced George Harrison to synths, and helped rescue a lost whale in a river and bring it back to the ocean by talking with it - to name a few things
Lately, his work has delt with shows effects of humans on nature - in the picture of a soundscape. Sounds can tell us a lot about the health of habitat. Plus nature is making a lot of sound. Check out this amazing recording of the sound that trees make.