<http://schema.org/description>
"Northern Hemisphere permafrost contains twice as much carbon as the atmosphere and could significantly amplify global warming, a U.N. report says."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.upi.com/Science_News/2012/11/27/UN-Thawing-permafrost-is-climate-threat/UPI-97741354059540/>