Science Direct provides indexing and full-text journal articles in the sciences and social sciences, including chemistry, medicine, computer science, earth science, economics, business, engineering, energy, environmental science, life science, materials science, mathematics, physics, and astronomy. This is a good source for scholarly research in those subjects.
Science is a family of journals published by the American Association for the Advancement of Science (AAAS). Full-text articles are available from 1997-present on topics such as the entire human genome, never before seen images of the Martian surface, advancement in robotics, clinical studies in immunology, and much more.
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is a collaborative effort of biologists and nature enthusiasts from around the world. On more than 10,000 World Wide Web pages, the project provides information about biodiversity, the characteristics of different groups of organisms, and their evolutionary history (phylogeny).