 This is the VOA Special English Agriculture Report. Pastoralism remains a way of life in East Africa. Herders travel from place to place in the dry, dusty deserts to find food and water for their animals. But some people think this movement of livestock is bad for the environment. They say pastoralists should settle on farms and grow their own food, especially in times of shortages. Not everyone agrees. Experts recently met in Nairobi to discuss what to do about food shortages caused by drought. They say pastoralists make the best use of resources. David Wongie at the Kenya Agricultural Research Institute says grasslands have time to recover. He says pastoralists have to leave an area as soon as the water is exhausted. They move to the next area that has water. It gives the area they left time to regenerate before they come back. Mr. Wongie says the land used for animals is often not good enough for farming, especially during droughts. He and other experts say pastoralism makes the most sense for dry and semi-dry lands. Jeff Hill directs policy for the Bureau of Food Aid at the United States Agency for International Development. He says arid and semi-arid lands represent about 80% of the Horn of Africa. Livestock-based economies in these areas provide up to 40% of agricultural production in Ethiopia and 50% in Kenya. And in Somalia, Mr. Hill says the percentage is even higher. In Somalia, livestock systems fuel the economy. An estimated 90% of the meat eaten in East Africa comes from pastoralist herds. Mr. Hill says Kenya and other governments have only recently recognized the value of arid and semi-arid lands. These lands have often been excluded from government planning and road building. Herders can face limited access to grazing and watering areas. Researcher David Wongie says communities need to be creative with the resources they have. He says a good example is a project in Kenya in which grass is grown in the desert to feed livestock. What would happen if we developed a system where we grow fodder and pasture along the river and the animals are taken off from the range and finished nearer to the market? What we need is a system and that is what has been really lacking. He also says more efforts need to be put into raising camels. Camels are often the only animals that produce milk during a drought. For VOA Special English, I'm Alex Villareal.