<http://schema.org/alternativeHeadline>
"Not a whiff of US shale gas has left the nation\u2019s shores in the 3- or 4-year-old boom."^^<http://www.w3.org/2001/XMLSchema#string>
<http://qz.com/36977/shale-gas-has-shaken-up-the-world-and-now-the-world-wants-in-on-the-action/>