What does it look like when a dirty industry goes clean? And can an ethical company be a profitable one? This week on Sea Change Radio, host Alex Wise talks to two people who work in very different industries: dairy processing and capitalism. His first guest is Brie Johnson from Straus Family Creamery who talks about practices that make milk production a more sustainable, less polluting and cleaner enterprise. Then he speaks with venture capitalist, Tom Blaisdell of DCM, about Clean Technology – where the concept of efficiency links the strange bedfellows of investment capitalism and sustainability.