<http://schema.org/description>
"Global warming may cause permanently frozen ground to thaw over a large area of Siberia, threatening release of carbon from soils, British researchers say."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.upi.com/Science_News/2013/02/21/Melting-permafrost-could-be-climate-threat/UPI-83711361483762/?pvn=1>