<http://schema.org/about>
"In much of the United States, light pollution in cities and even the suburbs is so bad that \"dark sky tourism\" is a rising trend, as Americans seek out the stars their ancestors took for granted. Next month, New Yorkers"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/culture/solar-powered-led-lights-in-the-hudson-river-reflect-the-unseen-stars-above-nyc.html>