Biology

Open access to 1,415,102 e-prints in Physics, Mathematics, Computer Science, Quantitative Biology, Quantitative Finance, Statistics, Electrical Engineering and Systems Science, and Economics.

BMC(BioMed Central) offers over 300 peer-reviewed journals on science, technology, engineering and medicine.

Free, full text, quality controlled scientific and scholarly journals, covering all subjects and many languages.

An open encyclopedia that gathers and shares information on all of the 2 million species known to science.

Latest news and glossaries in science, medicine & technology fields, from the American Association for the Advancement of Science.

Google Scholar is a free web search engine that indexes a wide range of scholarly literature.

National Academies provides free access to the 9,000 books on a wide range of topics in science, engineering, and medicine.

NSDL provides high quality online educational resources for teaching and learning, with current emphasis on the sciences, technology, engineering, and mathematics (STEM) disciplines.

A bibliographic database of over 1.3 million citations and abstracts, from the National Cancer Institute.

A registry and results database of federally and privately supported clinical trials conducted in the United States and around the world. Gives you information about a trial's purpose, who may participate, locations, and phone numbers for more details.

ENCyclopedia Of DNA Elements is a public research project to identify all functional elements in the human genome sequence.

PubMed comprises more than 28 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full-text content from PubMed Central and publisher web sites.

Free access to R&D results and scientific and technical information from scientific organizations across 15 U.S. federal agencies.

Find environmental protection topics, informational and educational resources on this governmental agency website.

USDA PLANTS Database provides standardized information about the vascular plants, mosses, liverworts, hornworts, and lichens of the U.S. and its territories.