<http://schema.org/about>
"One has to wonder about the carbon footprint of 20,000 architects, engineers and builders flying off to a convention, but there is a lot to see and learn. This year the sustainable building event Greenbuild International Conference and Expo is back in Chi"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/slideshows/sustainable-product-design/the-hottest-ideas-coming-out-of-greenbuild-2010/>