<http://schema.org/about>
"Because it's still there? To commemorate the centennial of Adm. Robert Peary's first-ever expedition to the Arctic, environmentalist Sebastian Copeland trudged 700 kilometers across the"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/culture/into-the-cold-why-trek-across-the-north-pole-now.html>