As we approach the start of Rio+20 ,it may be interesting for you to read about the UN General Assembly resolution on culture and development/2011/A/RES/66/208. In this document the important contribution of culture to the achievement of sustainable development and of national and international development goals, including the Millennium Development Goals is emphasized, mentioning diverse actions, and encouraging/inviting diverse levels of government and international agencies to place emphasis on culture in order to make sustainable development possible.
You can read the full Resolution here.