Indexes scholarly literature in the natural and social sciences. Use this to get extensive inter-disciplinary access to journal articles and also to find out which articles are being cited by other scholars.

Database for scientific research that contains the citations and abstracts of more than 1,800 Elsevier journals in the life, physical, medical, technical, and social sciences as well as selected full text articles. Science Direct can be searched as a database or browsed by individual title. Coverage varies.

The best publicly available database for the biomedical sciences. Search here for any health-related subjects.

A multidisciplinary database of scholarly, government and general-interest titles on environmental topics. Subjects covered include global climate change, green building, pollution, sustainable agriculture, renewable energy, recycling, and more.