Today we'll be speaking with a musician and audio engineer turned founder/director non-profit that's changing the way the world thinks about sound. From mixing films like the classic "Koyaanisqatsi" to helping create ISO standards on underwater metrics to speaking at environmental and scientific conferences all over the world and helping shift military and government policy, Michael Stocker is all about making change doable.

Against the odds, his work with Ocean Conservation Research has lead to real changes in the way the decisions are made about noise in our oceans. Here he reveals how that's happened, and what else has changed in the last 25 years.