<http://schema.org/url>
<http://www.treehugger.com/climate-change/melting-swedish-glaciers-show-treeline-was-600m-higher-just-4400-years-ago.html>
<http://www.treehugger.com/climate-change/melting-swedish-glaciers-show-treeline-was-600m-higher-just-4400-years-ago.html>