The book is based on the results of the investigations of the authors in the semi-arid and arid regions (ASAR) of the globe. These investigations brought to the conclusion that the warming climate will cause the drying up of the water resources in these regions. In this case the principles of Sustainable Development will not be able to avert forthcoming catastrophes. These conclusions brought to the compilation of the policy of "Progressive Development", emphasising investment in the development of new water resources and changing the natural environments while advancing the local populations on the dimension of knowledge by education.
Progressive Development is a new conceptual model recommended to scientists, engineers, economists, executives and project leaders of NGO aid projects who are involved in development projects in arid and semi arid regions all over the world