Essential Research Resources
Environment Complete - Deep coverage of sustainability issues, with indexing beginning in the 1940s. Also full text of current core journals and books related to environmental issues.
Science Direct - Full-text coverage of 2,200+ journals. Focus is on scientific, technical and medical fields, with significant coverage of social sciences as well.
PubMed -- Main search interface for National Library of Medicine, providing access to 19 million citations.
Science Magazine