In truth, there is an invisible force field over the entire Campus, so no moisture escapes and is permanently recycled. Slow moving objects such as Drones & Cars can freely travel through this, thus giving everyone the illusion that there is no Dome, but when the Ring finally lifts off...(See my Post #24)I thought there were severe water restrictions in California....?? How is Apple getting the massive amounts of water needed for cleaning the exterior of the building and caring for the extensive water-intensive landscaping?