<http://schema.org/about>
"Another encouraging development from the EPA today--the agency has just announced it is proposing the strictest ever standards for smog in the US. Smog, or ground level ozone, is responsible for a slew of serious health"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/corporate-responsibility/reversing-bush-epa-proposes-strictest-ever-smog-standards.html>