How can the process of tropical deforestation be controlled? We now know a good deal about the causes of deforestation but not its control. Research from the University of Leeds in Thailand and the Philippines fills this gap, showing that changes in the domestic political scene explain how deforestation processes have been controlled in the two countries. Environmental constraints and increases in agricultural productivity can curb the demand for farmland to some extent.

Since the early 1970s, the position of pastoralists in West Africa's Sahel zone has become ever more precarious. Their plight is evidenced by rural-urban migration movements as well as the results of field surveys. The last major drought of 1983-1985 delivered a major blow to communities which derive most of their food and revenues from herding. In many rangeland areas there is civil unrest - even building to armed conflict in places - owing to mounting tensions between various pastoral groups.

In Accra, as in other cities where rural-to- urban migration has added to the pressure on land, methods for the management and storage of land registry data are inadequate. How can land administration processes be automated through the introduction of information technology (IT) and Geographic Information Systems (GIS)? What institutional changes must be put in place?