Greg Peterson is an urban farming and sustainability innovator who resides at the Urban Farm, an environmental showcase home in the heart of Phoenix. He opens his home weekly for tours and classes, not only telling people, but showing them, how he has been able to make a living through urban farming for over two decades and how they can do the same.  Greg also runs Urban Farm U (UrbanFarm.org), filled with online courses designed to educate and inspire others to grow food for themselves and others.