Denis Hayes, founder of Earth Day and president of the Bullitt Foundation, knows a few things about building an environmental movement from a strong foundation. 

He also knows that it's a long road, but that every brick laid helps society at large, although there's work yet to be done. Here, he discusses the ins and outs of the Bullitt Center, a "living building" in Seattle, and his hope for the equitable future of the organizations that call it home.