<http://schema.org/about>
"A new version of aerogel \u2014 a strange smoky-looking material that's among the world's lightest solids \u2014 is 500 times stronger than previous versions."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/green-tech/research-innovations/stories/nasas-ultralight-material-is-strong-enough-to-support-a-car->