A new initiative in Washington, D.C. is promoting "green building". A new law in the district requires that public and private buildings over 50000 square feet must meet certifications established by the Leadership in Energy and Environmental Design (LEED) Green Building Rating System. Read more.
If you are unfamiliar with green building (LEED) certification, you can learn more here.
The District is going further to train residents in the skills required to construct green buildings. Learn more about the District's Green Collar Advisory Council here.