Biology

The American Institute of Biological Sciences is a nonprofit 501(c)(3) scientific association dedicated to advancing biological research and education for the welfare of society.

The American Society for Biochemistry and Molecular Biology (ASBMB) is a nonprofit scientific and educational organization with over 12,000 members.

Open access digital library for biodiversity literature and archives that provides free access to knowledge about life on Earth.

Contains all Darwin publications and many of his handwritten manuscripts. Also available is a comprehensive bibliography, the largest manuscript catalog, descriptions of Darwin's Beagle specimens, numerous ancillary texts and much more.

Freely accessible global access to knowledge about life on Earth. Content provided by museums, libraries, universities, research centers, individual scientists, graduate students and citizen science communities.

From the U.S. Fish and Wildlife Service

An outreach project of the Hudson Institute of Mineralogy, Mindat.org is a comprehensive open database of minerals, rocks and meteorites.

An independent federal agency that promotes science research.

This is a public database of paleontological data mapped geographically and through time.

From the U. S. Department of Agriculture Natural Resources Conservation Service. "The PLANTS Database provides standardized information about the vascular plants, mosses, liverworts, hornworts, and lichens of the U.S. and its territories."

"Science.gov searches over 60 databases and over 2,200 scientific websites to provide users with access to more than 200 million pages of authoritative federal science information including research and development results."

Science learning materials from the Nature Publishing Group. Focusing on genetics and cell biology, Scitable provides tools for finding, using and sharing science related content.

The Tree of Life Web Project (ToL) 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).