Green Grid Radio returns to the topic of food. This time, we go all the way back to the farm, and to the promise of the tractor. The tractor that promised to make life for farmers easier and our farms more productive. In today's episode, however, we meet a man who shares a story about the true impact the tractor had on farmers, and ultimately on our ability to grow food. Hosted by Diane Wu, produced by Erik Olesund and featuring Matt Rothe. (Photo: Matt and his dad Larry on a combine. Weldona, CO. October, 1979)