Engineer helps poor in developing nations purify drinking water

The device looks deceptively simple - a porous clay pot placed in a five-gallon plastic bucket with a spigot - but Vinka Craver believes it can save millions of lives each year.

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<p><a href="http://www.physorg.com/news156436938.html">Engineer helps poor in developing nations purify drinking water</a></p> <p>The device looks deceptively simple - a porous clay pot placed in a five-gallon plastic bucket with a spigot - but Vinka Craver believes it can save millions of lives each year. </p>