If you listen to inventor Dean Kamen, the biggest health problem facing the world today is not AIDS, obesity or malnutrition. It's a shortage of water.
the forward-thinking inventor and his team at DEKA Research in Manchester, New Hampshire, aren't sitting around waiting for the world's wells to dry up. They've been working on an invention they say can tap into 97 percent of the world's undrinkable water.
It's called the Slingshot, and it's a portable, low energy machine that is designed to purify water in remote villages.
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