<http://schema.org/about>
"We all know that healthy soils are a central part of sustainability. From carbon sequestration to increased crop production, it's hard to overestimate the contribution good soil can make to our collective well-being (or the damage that can be done by"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/lawn-garden/healthy-living-soils-tools-and-techniques-to-safeguard-our-future.html>