This book identifies a major problem facing developing nations and the countries and sources that fund them: the lack of attention and/or effective strategies available to prevent farmers in underdeveloped and poorly endowed regions from sinking still deeper into poverty while avoiding further degradation of marginal environments. The contributors propose an alliance of scientific knowledge with native skill as the best way to proceed, arguing that folk systems can often provide effective management solutions that are not only locally effective, but which may have the potential for spatial diffusion. While this has been said before, the volume makes one of the best articulated statements of how to implement such an approach.