<http://schema.org/description>
"South African researchers have developed a nanotech tea bag that instantly purifies water and costs half a cent. It&amp;#039;s portable, instantly effective and with eliminates the risk of recontamination."^^<http://www.w3.org/2001/XMLSchema#string>
<http://inhabitat.com/nanotech-tea-bag-purifies-drinking-water-for-less-than-a-penny/>