"The Desert: Lands of Lost Borders ", I choose to introduce this book because it highlights the important issue which's :desert, dry lands, desertification and a lot of things related to this, and the fact that Algeria  is intended in this matter: 80% of the total area is desert, northern regions are facing sand encroachment, spread of Tuareg of the Sahara , and her experience in fighting desertification by creating  "Green Dam" along 1700 km in 1972, and the Algerian Sahara taken appropriate area for testing nuclear weapons similar to dry areas in Nevada, Australia, Kazakhstan. and it has also hosted World Environment Day 2006  "Deserts and Desertification – Don't Desert Drylands!".

Geologist Michael Welland mixes between geology, environment, climate, plant, animal and anthropology to reveal places of natural and cultural abundance, with rich histories. and the central to the discussion is desertification, also correction of some of the concepts as a term of desertification and desert.

The book also lists the contemporary stories about the heroic efforts made by some people to resist the degradation of arid areas. Welland highlights Yacouba Sawadogo, a farmer in Burkina Faso, succeeded in greening a large area of the desert, despite the government's resistance. He has used a method based on drill, and filled them with biodegradable waste, this attracts termites, whose tunnels break up the soil and encourage rain to infiltrate. In addition to mega projects, and often questionable, like the 'Great Green Wall' which is being planted across China and another will traverse Africa in an effort to stop 'desertification'.