Our world is changing, and with 82% of the population living in cities, how we design and build our cities should be changing too. At this point, we need drastic measures that reverse the effects of years of planetary neglect. The Living Building Challenge, developed by the International Living Future Institute, is a rigorous set of building, material and operations criteria that result in beautiful, contemporary net zero energy projects. Only five buildings worldwide have achieved certification so far, but over 190 additional projects are in some sort of design, building or operation phase. And Seattle is pioneering net zero energy in a new way.