<http://schema.org/alternativeHeadline>
"The EPA is proposing a two-thirds cut in gasoline's sulfur content, and is whacking away at other gas-borne pollutants, too. But the refiners say the new law will push up prices at the pump."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/green-tech/transportation/blogs/cleaning-up-killer-gasoline>