<http://schema.org/about>
"In our zeal to create air-tight efficient buildings, we've forgotten the detrimental effects of too much CO2. Enter the CO2-controlled meeting room."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/interior-design/who-knew-excess-co2-bad-our-brains.html>