<http://schema.org/about>
"Ice loss in Antarctica and Greenland has contributed nearly half an inch to the rise in sea levels in the past 20 years, according to an assessment  of  polar i"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/earth-matters/wilderness-resources/stories/loss-of-polar-ice-sheet-accelerating>