<http://schema.org/about>
"Wood can be the perfect sustainable material; it sucks up CO2 and once cut, it holds it for the life of the building. Unfortunately in North America it is not used a lot for non-residential buildings and we don't see many offices or schools like they"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/green-architecture/wood-construction-scales-up.html>