Academic Search Complete
Thousands of articles/periodicals in full text. Multidisciplinary and a great place to start your research.
Scholarly, government, and general interest content on green building, pollution, sustainable agriculture, renewable energy, recycling, etc.
A good place to begin most research. It's the largest multidisciplinary database with full text articles from over 8,000 journals/newspapers, covering over 160 subject areas.
Articles in science and technology; medical research and nursing; and social science areas like psychology.
Biological Sciences (was CSA Biological Sciences)
Indexing and abstracting of scientific journals covering biological science topics such as aquaculture, biotechnology, marine biology, neurosciences, and more. There are some full text links.