<http://schema.org/description>
"Researchers at Kansas State University have developed a concrete mixture that uses byproducts from biofuel production that reduces its carbon footpring."^^<http://www.w3.org/2001/XMLSchema#string>
<http://inhabitat.com/concrete-made-with-biofuel-waste-is-strong-durable-and-has-a-lower-carbon-footprint/>