Finally, a Billboard That Creates Drinkable Water Out of Thin Air | TIME.com

Scratching the air for moisture!

http://techland.time.com/2013/03/05/finally-a-billboard-that-creates-drinkable-water-out-of-thin-air/?iid=hl-article-mostpop2

Sketches from scratches:  http://Woohs.blogspot.com