<http://schema.org/alternativeHeadline>
"What started as small ideas are now changing industry in big ways. More than 2,000 thought leaders will gather in San Diego from June 3-6 to discuss the state of business sustainability."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/earth-matters/space/stories/sustainable_brands_2013>