![GreenBiz 350 show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/078/903/small/greenbiz-350.png)
Summary: Highlights from keynotes by Google's Kate Brandt, Ellen Macarthur Foundation's Andrew Morlet, and Cradle to Cradle co-founder Bill McDonough. Plus, on-the-spot interviews with UL engineer Bill Hoffman, General Motors materials guru Lauren Smith and World Wildlife Fund researcher Erin Simon.