<http://schema.org/about>
"By supporting local eco-friendly activities, San Francisco's novel offsetting program, dubbed the San Francisco Carbon Fund, would seek to redress one of the most commonly criticized aspects of carbon offsets: namely, the oft"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/corporate-responsibility/san-francisco-becomes-first-city-to-start-carbon-offset-program.html>