These proceedings record the results of climate change in many areas which are hyper-arid deserts today but which, almost cyclically, at intervals of thousands or even hundreds of thousands of years, have had a much more humid climate.

This wide-ranging selection of original papers covers many aspects of desertification including environmental and weather factors, land management policy, groundwater resources, understanding biodiversity in fragile ecosystems, technological approaches to the study and remedy of desertification.