Natural Science & Mathematics

General Science Anatomy & Physiology Biochemistry Biographies Biology
Botany Chemistry Evolution Genetics History
Mathematics Microbiology Pathology Physics Stem Cells
Taxonomy Teacher Resources Zoology    

General Science

  • BioMed Central
    BioMed Central publishes a variety of peer reviewed open access journals spanning the areas of biology, biomedicine, and medicine. All original research articles published by BioMed Central are made freely accessible online immediately upon publication. BioMed Central's portfolio of journals includes general titles such as Journal of Biology, as well as specialist journals that focus on particular disciplines.

  • Government Information Sources for Science and Technology
    Created by the Association of College Research Libraries, this site provides access to quality science and technology websites. It includes links to resources for environmental science, life science, math, and more. This site is a gateway to federal websites, but it also includes links to state and international resources.

  • is a gateway to a wealth of authoritative government science information and research results. It includes access to information on topics such as biology and nature, energy, earth and ocean sciences, environment, natural resources, and much more.

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Anatomy & Physiology

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  • Biochemistry Online
    This unique, interactive web-based biochemistry text has numerous diagrams and 3-D animations incorporated into the book's nine chapters. Frequently updated, the chapters begin with lipid structure and end with signal transduction. This site also includes links to other useful online resources in biochemistry.

  • The Biology Project: Biochemistry
    This University of Arizona website provides problem sets and tutorials in biochemistry. The content is divided into two main categories: chemistry of life and energy reactions. Students can find clear, in-depth explanations and colorful images related to the science of amino acids, pH levels, photosynthesis, metabolism, and more.

  • THE Medical Biochemistry Page
    Provided by Dr. Michael W. King of the Terre Haute Center for Medical Education, this resource offers a wealth of information which users can access using the extensive biochemistry subject list found on the site’s homepage. Designed with the undergraduate in mind, each section contains full-text descriptions of a particular subject with accompanying illustrations, tables, figures, and references.

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  • The Biology Project
    This interactive site provides information on biochemistry, cell biology, chemical and human health, developmental biology, human biology, immunology, Mendelian genetics, and molecular biology. Designed for biology students at the college level, this site has activities, interactive problem sets, tutorials, vocabulary lists, and links to useful websites.

  • Encyclopedia of Life (EOL)
    The EOL aims to become an online reference and database for all 1.8 million species currently known to science. Ultimately EOL should become a valuable resource for understanding taxonomy, geographic distribution, collections, genetics, evolutionary history, morphology, behavior, and ecological relationships.

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  • PLANTS Database
    Provided by the United States Department of Agriculture, the PLANTS Database provides standardized information about the vascular plants, mosses, liverworts, hornworts, and lichens of the United States and its territories.

  • Wisflora
    Presented by the Wisconsin State Herbarium at the University of Wisconsin - Madison, this is a fully searchable website of Wisconsin's vascular plant species. It includes photos, habitat information, distribution maps, herbarium specimen data, and more.

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  • American Mathematical Society (AMS)
    This site has links to several AMS publications and provides full text access to numerous mathematics books through AMS Books Online. The site also includes the latest mathematics news, information on conferences, career information, internet resources, and more.

  • College Algebra Online Tutorials
    Created by West Texas A&M University, this site features 59 tutorials that contain learning objectives, practice problems and tests, links to online resources, and numerous examples of how to correctly solve a variety of math problems.

  • The MacTutor History of Mathematics Archive
    This site contains a wealth of information related to the history of mathematics.

  • The Math Forum
    Published by Drexel University’s School of Education, this site is a leading center for mathematics and mathematics education on the Internet. Among this site’s many resources are problems and puzzles, tools that allow teachers to collaborate and share lessons, an Internet math library, and a weekly electronic newsletter. Most resources are available free of charge.

  • The Prime Pages
    This comprehensive site is totally devoted to the understanding of prime numbers. Among its many sections are a large “Prime Links” index with links to other prime resources, a “Prime Glossary” with basic definitions about primes, and a "Prime Curios!" page with curiosities, wonders, and trivia related to prime numbers.

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  • ArXiv
    This e-print archive is the premier electronic source for most streams of research in physics, mathematics, computer science, nonlinear sciences, and quantitative biology. Currently this web searchable database provides access to almost a half million papers. ArXiv is operated and funded by Cornell University.

  • Physics Flash Animations
    This site provides more than 80 Flash animations from different areas of physics. Topics covered include classical mechanics, optics, electricity and magnetism, quantum mechanics, and sound waves. All animations require Flash player which can be downloaded using a convenient link that is also provided.

  • Physics and Astronomy Links -
    This is a comprehensive site for educational, research, and reference resources related to physics and astronomy. It includes an “Ask the Experts” page, physics job board, historical information, directories, fun stuff, and more.

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Stem Cells

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  • Catalogue of Life
    The Catalogue of Life is a comprehensive and authoritative index of the world's known species of animals, plants, fungi, and micro-organisms. It consists of a single integrated species checklist and taxonomic hierarchy. The Catalogue is compiled from information provided by taxonomic databases from around the world and holds information on the names, relationships, and distributions of over 1.5 million species.

  • National Center for Biotechnology Information (NCBI) Taxonomy Database
    This NCBI database contains an extensive collection of taxonomic information on organisms. A search box is provided for easy access to individual organisms, or users may browse the database using a hierarchical tree. This site also includes links to useful taxonomy resources.

  • NatureServe
    Created by the Association of Biodiversity Information, this site provides access to information on more than 70,000 plants, animals, and ecosystems of the United States, Canada, and Latin America. Entries for organisms provide common name, scientific name, taxonomic hierarchy, distribution, conservation status, ecology and life history information, references, and more. NatureServe includes particularly in-depth coverage for rare and endangered species.

  • Tree of Life
    The Tree of Life Web Project is a collaborative effort of biologists from around the world. The project provides information about the diversity of organisms on earth, their evolutionary history, and characteristics. Pages contain hierarchy information in the form of an evolutionary tree of life.

  • uBio
    Provided by the library at the Marine Biological Institute at Woods Hole, this site offers a comprehensive catalog of known names of living (and once-living) organisms. It includes classification information, synonyms, and common names.

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Teacher Resources

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  • AmphibiaWeb
    This site offers access to taxonomic information for amphibians of the world. Species accounts are added regularly and provide species descriptions, life history information, conservation status, literature references, photos, and range maps for many species.

  • Animal Diversity Web
    Provided by the University of Michigan, this online database provides information on animal natural history, distribution, classification, and conservation biology. It includes thousands of species accounts about individual animal species as well as descriptions of levels of organization above the species level.

  • BirdLife International
    BirdLife International is a global partnership of conservation organizations that strives to conserve birds, their habitats, and global biodiversity. According to its website, BirdLife provides information on all birds of the world. It allows users to search for information on a particular species or sets of species by specifying a number of different search criteria. The search feature allows users to find information on endangered or threatened bird species according to geographic location.

  • Butterflies and Moths of North America (BAMONA)
    BAMONA is a searchable database of verified butterfly and moth records for the continent of North America from Panama to Canada. This site includes dynamic distribution maps, photographs, species accounts, and species checklists by location.

  • FishBase
    Developed at the WorldFish Center in conjunction with the Food and Agriculture Organization of the United Nations, this site provides access to a comprehensive and widely consulted database on the world's fish species. FishBase contains information on practically all fish species known to science.

  • IUCN Red List of Threatened Species
    The IUCN Red List of Threatened Species™ provides taxonomic, conservation status, and distribution information on plants and animals that have been globally evaluated using the IUCN Red List Categories and Criteria. The main purpose of the IUCN Red List is to catalogue and highlight those taxa that are facing a higher risk of global extinction.

  • National Wildlife Health Center (NWHC)
    Maintained by the United States Geological Survey, this site disseminates information to "promote science-based decisions affecting wildlife and ecosystem health”. The NWHC provides information, technical assistance, research, education, and leadership on national and international wildlife health issues.

  • NatureServe
    Created by the Association of Biodiversity Information, this site provides access to information on more than 70,000 plants, animals, and ecosystems of the United States, Canada, and Latin America. Entries for organisms provide common name, scientific name, taxonomic hierarchy, distribution, conservation status, ecology and life history information, references, and more. NatureServe includes particularly in-depth coverage for rare and endangered species.

  • North American Mammals
    The Smithsonian Institution's National Museum of Natural History developed this website to serve as a resource for students, teachers, and the general public interested in the biology and identification of mammals in North America. It includes detailed descriptions, images, distribution ranges, and family trees for more than 740 mammals native to the North American continent.

  • Primate Info Net
    Maintained by the National Primate Research Center at the University of Wisconsin-Madison, this site provides comprehensive information about primate taxonomy, morphology, habitat, behavior, and conservation.

  • United States Fish and Wildlife Service
    The U. S. Fish and Wildlife Service site provides access to policies, laws, regulations, procedures, planning efforts, scientific research, and educational activities related to the conservation of fish, wildlife, plants, and habitats. The site includes information on endangered and invasive species. Numerous free publications are available in the online library.

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