Thinking Green, Autodesk has published a guide for all to read on sustainable design. This helps you understand and explore the impact of energy, water, materials, and land in the building lifecycle.With selection of each of the areas of the lifecycle segment there is a link to Learn More detailed information.
Guide to Sustainable Design For Architecture, Engineering & Construction
Note: Being Sustainable or Green does not just mean drawing on green layers or using green textures. :-)
-Shaan