Gary Hirshberg is President and CEO of Stonyfield Farm, the number four yogurt maker in America. It's come a long way from humble beginnings and has managed to remain true to its mission: making healthy food and treading lightly on the earth. Now Stonyfield is joining a major food conglomerate and hopes to bring it's brand of organic to a wider audience. He's also started a new venture, a natural fast-food franchise. www.stonyfieldfarm.com www.onaturals.com