"Recognizing that the aging building and infrastructure would require a major renovation after 20 years of service, AGU seized upon an opportunity to lead by example. In addition to creating a welcoming and collaborative space for its members and the D.C. community that would facilitate the understanding of Earth and space science, the organization chose to design and engineer the modernization of the building to meet net zero goals." Popville http://www.popville.com/2016/12/american-geophysical-union-renovation-dc/