Shea Cockrum thinks that extracting water from air is the solution to the world's water shortage. Honestly, I'm not sure whether he's a nutcase, or if his theories could actually work. He claims that he was extracting one or two gallons of water an hour from an "air well" that he constructed in his backyard consisting of buried PVC pipe through which hot air was blown. One or two gallons of water an hour, if he was really getting this, isn't bad at all. And according to Cockrum, this was just the beginning. His new system is even better. Like I said, I have no idea if this could be done... though I do know that an incredible amount of dew collects in my yard every morning, which is the only reason I'm reluctant to dismiss his theory out of hand.