In places like the valley town of Alma, once known to Butch Cassidy and the Wild Bunch, and through the dusty streets of San Antonio, where Conrad Hilton began his fabulous career by carrying luggage
We have always had land in which the agricultural productivity is limited because there is not enough moisture. Systems of farming and burning often degrade dryland further until it is desert. Today,
Drylands are a sizeable part of the world's potentially arable land. They vary from the hyper-arid regions of the classic deserts of Africa and Asia to the more common semi-arid and sub-humid areas th
