<http://schema.org/description>
"What if scrubbing pollution out of the air was as easy as laying down specially coated paving slabs? It might be--at least for one German city with toxic levels of nitrogen oxide caused by vehicle emissions."^^<http://www.w3.org/2001/XMLSchema#string>
<http://inhabitat.com/paving-slabs-could-scrub-pollution-out-of-the-air/>