<http://schema.org/image>
<http://rack.3.mshcdn.com/media/ZgkyMDE0LzExLzE3L2ZiL1N1c3RhaW5hYmxlLjA0NzEyLmpwZwpwCXRodW1iCTEyMDB4NjI3IwplCWpwZw/a99c9504/b01/Sustainable.jpg>
<http://mashable.com/2014/06/30/sustainability-consumers/>