<http://schema.org/about>
"Most of the methane in the east Siberian shelf is trapped 200m below the seafloor. Even under the most extreme climate scenarios tested, by 2100 thaw will only extend 10 more meters and 50 meters by 2200."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/climate-change/arctic-methane-situation-really-bad-headlines-make-it.html>