<http://schema.org/alternativeHeadline>
"Researchers identified the epicenters for 67 earthquakes, most located within a few miles of one or more fracking wells."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/earth-matters/wilderness-resources/stories/fracking-injection-process-linked-to-scores-of-earthquake>