Toby Hemenway is the author of the first major North American book on permaculture, Gaia s Garden: A Guide to Home-Scale Permaculture. After obtaining a degree in biology from Tufts University, Toby worked for many years as a researcher in genetics and immunology, first in academic laboratories at Harvard and the University of Washington in Seattle, and then at Immunex, a major medical biotech company. At about the time he was growing dissatisfied with the direction biotechnology was taking, he discovered permaculture, a design approach based on ecological principles that creates sustainable l...