<http://schema.org/url>
<http://media1.fdncms.com/missoula/imager/the-colorful-carbon-footprints-of-denver-colorado-and-its-surroundings-o/u/original/1925744/1390505614-f9b7042b-9176-438b-bed2-7ad6d9facdad.jpeg>
<http://missoulanews.bigskypress.com/IndyBlog/archives/2014/01/23/new-study-maps-carbon-footprints-comes-to-surprising-conclusions/>