Dean Kamen's Slingshot invention is getting some recent buzz. Using a process called vapor compression distillation, a single Slingshot can purify more than 25

Dean Kamen's Slingshot invention is getting some recent buzz. Using a process called vapor compression distillation, a single Slingshot can purify more than 250,000 liters of water per year, enough to satisfy the needs of about 300 people. And it can do so with any water source—sewage, seawater, chemical waste—no matter how dirty. http://www.popsci.com/article/science/pure-genius-how-dean-kamens-invention-could-bring-clean-water-millions http://www.popsci.com/article/science/pure-genius-how-dean-k...