<http://schema.org/alternativeHeadline>
"Ivory can cost more than gold on the black market, but the U.S. hopes to 'send a very clear signal' that it's only valuable when attached to a living elephant."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/earth-matters/animals/blogs/why-the-us-just-crushed-its-ivory-stockpile>