"…and to use something as elegant as a tree—imagine this design assignment: Design something that makes oxygen, sequesters carbon, fixes nitrogen, distills water, accrues solar energy as fuel, makes complex sugars and food, creates microclimates, changes colors with the seasons and self-replicates. Well, why don’t we knock that down and write on it?"
William McDonough, Cradle-to-Cradle Design at TED



