Introduction to the arid and semi-arid lands: their potential and status. Erosional processes in ASALS and soil conservation methods. Vegetation topology and plant resources. Development of rangelands. Agricultural pastoralism and wildlife management. Food and population problems. Desertification. Water resources in arid environment. Regional case studies focusing on interactions between man and environment. Applications of technological advances to development of arid and semi-arid environments. Field trip(s) will be required