<http://schema.org/about>
"\nLeft: Ozone in Earth's stratosphere at an altitude of approximately 12 miles (20 kilometers) in mid-March 2011, near the peak of the 2011 Arctic ozone loss. Right: chlorine monoxide - the primary agent of chemical ozone destruction in the cold polar"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/clean-technology/in-2011-the-arctics-ozone-layer-hole-grew-to-an-unprecedented-size.html>