Despite the title, this is a good resource for Economics. Limit your search to the Social Science section of the database for best results.
Also includes BIOSIS Citation Index, Data Citation Index, Current Contents Connect, Derwent Innovation Index. Medline (1950-present), Current Chemical Reactions, Index Chemicus, and Zoological Records.
Full-text database that covers many areas relating to sustainability such as corporate social responsibility, environmental stewardship, regulations, green issues, renewable energy, and social entrepreneurship.