The series, entitled Exchange of Environmental Experience, grew out of a recognition that a great deal of valuable experience on the environment was being shared through the INFOTERRA network, and perhaps much of this information warranted a wider audience. The substantive information given to one user upon request might be of interest to others. This volume of the EEE series "INFOTERRA 15 Years of Making a Difference " aims to convey to the public a number of success stories of the INFOTERRA network and its impact on sustainable development.The success stories related here have been submitted by the involved INFOTERRA national focal points and researched by the staff of the INFOTERRA Programme Activity Centre as completely as resources have permitted.