<http://schema.org/about>
"America's National Forests generally meet green-certification standards for sustainable management, says a new study, but balancing the myriad demands for logging, recreation, and conservation remains a challenge. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/natural-sciences/american-national-forests-generally-ok.html>