Trade associations are great for learning about the current trends and concerns in an industry. Find associations to track in the reference section at the end of the S&P Industry Surveys (available via S&P's NetAdvantage).
Search association Web sites for reports, policies, and press releases on sustainability. Use Associations Unlimited to find information for thosands of membership organizations in all fields including 23,000 U.S. national associations, 20,000 international associations and 115,000 U.S. regional, state, and local associations.
Sample Trade Associations
The World Business Council for Sustainable Development (WBCSD)
CEO-led, global association of over 200 companies dealing exclusively with business and sustainable development.
Read the latest edition of the World Energy Outlook Report, the International Energy Agency's authoritative annual global energy projections.
The report analyses what the economic crisis will mean for energy markets and how the transition to a clean global energy system can be financed.
There are a number of publications geared towards specific topics in sustainability. Some will be heavily academic while others are more business orientated.
Resources related to environmental sustainability, for example Wind Energy, may be very technical and a scientific background is helpful for understanding them.
Many publications related to social sustainability are produced by governments, non-governmental organizations (NGO), and academia such as the ESR review.