Published in the New York Times
http://www.nytimes.com/2013/02/14/garden/a-permaculture-love-story.html?pagewanted=all&_r=0
“Eric Toensmeier has spent twenty years researching edible and medicinal plants, and their use in perennial agroecosystems. He is the author of ‘Perennial Vegetables’ and co-author of ‘Edible Forest Gardens’ with Dave Jacke. Both books have received multiple awards, including the American Horticultural Society Garden Book of the Year and ForeWord Magazine Home and Garden Gold Medal Book of the Year Award, Garden Writer’s Association Silver Medal and American Library Association Choice Magazine Outstanding Academic Title. His current project is promoting perennial farming systems, including agroforestry and perennial staple crops, as a strategy to sequester carbon while restoring degraded lands, and providing food, fuel and income, and ecosystem services. His urban garden is a model of how to apply permaculture to a small space with poor soils, featuring over 200 useful perennial and self-seeding species on 1/10 of an acre.” Excerpt from Perennialsolutions.org