Green Building Organizations

The Natural Step
Guidelines, resources and case studies for sustainable design - a "blueprint for a sustainable world."
http://www.naturalstep.org/com/Start/

Rocky Mountain Institute
Nonprofit organization that fosters the efficient and restorative use of resources to make the world secure, just, prosperous, and life-sustaining.
http://www.rmi.org/

Sustainable Buildings Industry Council (SBIC)
Promoting a 'Whole Building' Approach to Achieve High Performance Buildings.
http://www.sbicouncil.org/

US Green Building Council (USGBC)
The U.S. Green Building Council (USGBC) is a national, non-profit organization that was formed in 1993 and is the creator of the LEED (Leadership in Energy and Environmental Design) Green Building Rating System®.
https://www.usgbc.org/

US Green Building Council (USGBC), St. Louis Chapter
http://chapters.usgbc.org/stlouis/