<http://schema.org/alternativeHeadline>
"How does the fear of wolves change the behavior of deer and elk? Scientists study this connection and discover how entire ecosystems benefit from wolves keeping herbivores on edge."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/earth-matters/animals/stories/how-the-fear-of-wolves-benefits-ecosystems>