posted 9 years ago
If they can get the prevailing winds to help out, they might be able to coerce nature to build a series of high sand mountains, say 1 to 3 thousand feet high. The existing high dunes appear to be acting as some kind of water collector, evidenced by the string of oases (collectively known as Liwa) along the northern front of that feature.
I also checked out harvesting condensate from air conditioners. Not a new idea. A home's central air conditioner could potentially meet the water needs of a small garden. Only problem is legionnaires disease, so recommended use is limited to subsurface irrigation, unless sterilized, but that conserves the water so it is a win-win.