<http://schema.org/description>
"Designer Peter Trimble has demonstrated a radical method of manufacture that addresses energy production and raw material shortage issues. Dupe is a portable machine that uses a mixture of sand, bacteria and urine to create a material called biostone."^^<http://www.w3.org/2001/XMLSchema#string>
<http://newatlas.com/dupe-sand-urine-bacteria-concrete-machine/30804/>