it is either the sahara or the gobi desert...but desertification and our lack of intellectual and practical solutions to curb the ruination of potentially arrable land is the true desert!!!!iran incident has come across some cutting edge technology in reclaiming dune fields and desert lands by utilizing a sprayed-dispersed oil film to seal seedlings of accassia bushes to resist evaporation and retain all incidence of moiture beneath it this could help stop and tie-down the barchanes(sp),the marching dune that devastate large regions world-wide...the coastal deserts of peru and ecuador once blossomed by the use of channneled andean water thruirrigation canals...the conquistadors found beautifully arrayed villages,garden and fields on well maintained road systems;however, when they had returned,they discovered their previous passive contact ,had,without warfare killed nearly everyone by disease the incas and their subjects had no immunity for!!so without the assistance of their husbandry and care,maintenance and repair all of this was lost in only a couple of years with no one to bury the dead!!!!systems under human responsibility are always so-o-o-o-o-o fragile11WE ARE LOSING 30,000 ACRES A YEAR IN SOME AREAS TO DESERTIFICATION FROM CAUSES THAT CAN BE AMENDED BECAUSE THE PROBLEMS ARE MAN-MADE AND PREVENETABLE!!!!