Recently posted on HN, under the thread "A remote UK community living off-grid (bbc.co.uk)":

https://news.ycombinator.com/item?id=18498110

Excerpt from the comment:

[ A political science graduate of Yale University, Jeavons worked for the United States Agency for International Development (USAID) and Stanford University before launching his career in small-scale agriculture education. He is the author of the best-selling sustainable farming handbook How to Grow More Vegetables, Fruits, Nuts, Berries, Grains, and Other Crops Than You Ever Thought Possible On Less Land Than You Can Imagine, now in its 8th edition in eight languages ]