The state of Hawaii has very limited water, yet the population and commercial needs for water continues to grow. One big problem was that the golf courses were watering daily using up billions of gallons of water. Now, most of them only need to water once a week.
Here is a great set of articles on the agricultural use of polyacrylamides.
We know that rain forests begat rain and deserts make more arid land. We have the ability to change that.
Now for my idea...
Take a struggling African nation like Chad who has a couple of different types of terrain. Take the desert terrain that is close to the tillable land and add PAM (polyacrylamides) to the soil. As the arid environment slowly changes with the moisture in the air, the land will become more able to support crops.
Imagine taking the deserts of Chad and orther countries and within 10 to 30 years producing enough crops to feed all of Africa.
Africa and Hawaii need desaltinization plants, and instead of oil pipelines, they need water pipelines, but I think it would be best to place them underground, I do not think they are to attractive. LOL!!!!!!!!
Decades of collonization exploitation and since a fragile independence the oil craze have numbed the people into seeking fortune. We are living in an oil-rush era. They would have to be reeducated in order that something is done by them for their own good, and that is a far-fetched idea. Anybody else trying to do it would be interventionism.