<http://schema.org/about>
"Fancy yourself a climate-friendly gardener? See how green your garden &lt;i&gt;really&lt;/i&gt; is with a 9-part quiz from Roots of Change."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/your-home/at-home/blogs/how-green-does-your-garden-grow>