<http://schema.org/about>
"Since 2008, these two things haven't changed: the world is getting warmer and millions of Americans are out of work. They're not going away any time soon."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/corporate-responsibility/the-green-economy-is-growing-its-inevitable.html>