<http://schema.org/description>
"The Ultima Tower &amp;ndash; a 2-mile high Mt Doom-esque structure - borrows design principles from trees and other living ystem to reduce its energy footprint."^^<http://www.w3.org/2001/XMLSchema#string>
<http://inhabitat.com/ultima-tower-the-vertical-green-city-that-works-like-a-tree/>