<http://schema.org/about>
"From Lester Brown's excellent piece on losing soil to Jasmin's dirt on soil erosion, the topic of soil erosion and what it means for the future of our civilization is always an important one here on TreeHugger."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/green-food/how-tax-payers-subsidize-soil-erosion-in-the-mid-west-video.html>