<http://schema.org/about>
"There is some  good news about the grounding of 63,000 flights due to the volcanic eruptions in Iceland.  It has saved 1.3M tons of carbon dioxide so far.  And the ban is scheduled to continue until some time"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/clean-technology/the-good-news-no-carbon-emissions-from-europe-and-ingenuity-triumphs.html>