Hi, I am new to this site, i am not a brain box nor am i studying for any qualifications. I wonder why the worlds drought problem could not be solved by massive dehumidifiers to create water for crops and filtered for drinking. So far i see no problem why this cannot be done using solar energy to charge batteries by day and produce water in the nights? Someone told me that it is possible in places where the air is damp but will not work in arrid locations, Would africa be considered as arrid? Does evenings hold more moisture and could this system work in places like Africa? It is my intention to eventually be able to set this project up in a location where water is greatly needed, this will take place on behalf of a charity and all the help i can get to solve these problems would be greatly recieved. Regards Vernon.