Named after a line in Darwin's On the Origin of Species, Entangled Bank incorporates such sustainable features as a green screen, vertical wind turbines, and solar panels. (Courtesy Little)

What if one block in Texas became the sustainable model for the world? Such was the question posed recently by Urban Re:Vision, a California-based group bent upon creating better cities through rethinking the components that make up a city block. Earlier this month, the organization unveiled the three finalists in one of its latest design competitions: Re:Vision Dallas. Contestants were asked to create proposals for a mixed-use development near downtown that would do “no harm to people or place.” Find out more about the finalists after the jump: Read More