<http://schema.org/alternativeHeadline>
"Scientists are quick to point out that the crack isn't connected to climate change; they have been expecting a large iceberg to split off for some time."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/earth-matters/wilderness-resources/stories/nasa-image-proves-massive-crack-in-antarctic-ice-is-growi>