<http://schema.org/about>
"Wood construction has some tremendous advantages. Wood is strong, light, flexible and fast. Unlike concrete, which adds a ton of CO2 to the atmosphere for every ton of cement made, wood is renewable and"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/sustainable-product-design/wood-buildings-can-withstand-massive-earthquakes.html>