<http://schema.org/alternativeHeadline>
"Obama announces 28% CO2 reduction and Leonardo DiCaprio and a host of celebs get behind the NRDC's Senate plea to pass clean energy legislation."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/green-tech/computers/blogs/obama-says-28-and-dicaprio-says-this-is-our-moment>