Interesting video about a device that may make water shortages a thing of the past.
Update:
This looks like an air well. It seems that I have looked at these before, but I cannot find the post on this blog. Maybe I didn't make a post, or the post is buried somewhere in the blog.
Whatever. The concept is not explained in this video.
Al Fin: "Cowboy Commentary", aka "Eat your veggies" The Flag banner is posted in order to defy those who would make patriotic symbols illegal or disreputable.
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