<http://schema.org/about>
"For everything we take from the Earth, there is a byproduct or consequence. Perhaps pollution is a symptom of nature's imbalance. Here's a list of the 10 worst"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/earth-matters/wilderness-resources/photos/the-10-worst-forms-of-pollution-0/radioactive-waste-0>