<http://schema.org/description>
"The word &amp;quot;ozone&amp;quot; gets tossed around conversation as casually as a softball, but how many of us could really describe what the ozone layer is? The &amp;quot;hole&amp;quot; in it isn&amp;#039;t exactly a hole."^^<http://www.w3.org/2001/XMLSchema#string>
<http://science.howstuffworks.com/environmental/green-science/ozone-layer1.htm>