Water is the ultimate nutrient. Not only is it the most abundant molecule in the human body, we can survive no longer than a few days without it. But, in some of the arid regions of the world, rains do not replenish groundwater supplies and very little potable water can be found above ground. Since there are over 3000 cubic miles of water vapor in the atmosphere, atmospheric extraction, achievable through the use of amphipathic films, provides a method of providing much needed water to the most arid regions on Earth.