- Online Biology Book
 - Provides a large amount of information about the chemistry, structure, function, and diversity of life. Also includes an extensive glossary. - BioTech
- Hybrid biology/chemistry educational resource and research tool on the World Wide Web.
- ActionBioscience.org
- Examines issues on environment, biodiversity, genomics, science education, evolution, and more.
- Intute: Health and Life Sciences
- Guide to Internet resources in the health and life sciences.
- Biology-Online.org
- Offering forums addressing genetics, human biology, call biology, botany, and evolution. Also features introductory and intermediate online tutorials, a biology dictionary, and numerous links.
- BiologyBrowser
- Produced by BIOSIS, it offers resources and links for the life sciences information community. Browse the directory by organism, scientific subject, or geography.
- Discover Life
- Provides free on-line tools to identify species as well as ways to teach and study nature's wonders, report findings, build maps, process images, and contribute to and learn from Discover Life's species encyclopedia.
- U.S. Department of the Interior - USGS Biological Resources Division@
- About.com: Biology
- Guide to biology articles and sites of the Web.
- Bio Netbook
- Searchable database of biology web sites, produced by the Institut Pasteur.
- Wikispecies
- An open, free directory of species. Covering the animalia, plantae, fungi, bacteria, archaea, protista, and all other forms of life.
- International Field Guides
- A web supplement to Diane Schmidt's book, A Guide to Field Guides.
- Biocrawler
- Directory and search engine for biology news, companies, videos, images, and other web sites, as well as a biowiki.
- IUBio-Archive
- Archive of biology data and software, established in 1989 to promote public access to freely available information, primarily in the field of molecular biology.
- NASA Life Sciences Data Archive
- Provides a description of every life sciences experiment performed in space during the Mercury, Gemini, Apollo, Shuttle, and NASA-Mir programmes.
- Palaeos: The Trace of Life on Earth
- Dedicated to providing detailed information on the history of life on Earth. Addresses palaeontology, evolution, geochronology, systematics, and ecology.
- Biology and Evolution Jump Station, The
- Offers links, articles, and education references relating to biology and evolution.
- Science24.org
- Features daily headlines about discoveries in the life sciences, medicine, and technology.
- Kimball's Biology Pages
- Online biology text book that allows users to alphabetical browse or search for descriptions and definitions of biological terms and issues.
- OpenWetWare
- An effort to promote the sharing of information, know-how, and wisdom among researchers and groups who are working in biology and biological engineering.
- student.biology.arizona.edu
- Online showcase for academic projects created by University of Arizona students in the fields of biochemistry, genetics, neurobiology, microbiology, and immunology.
- Biosingularity
- Blog chronicling the remarkable advances in biological systems.
- Planetary Biology
- Find news, publications, research programmes, and projects dedicated to the field of planetary biology, the science that considers biological phenomena in terms of the whole planet.
- Search in the Biology Web Servers
- This server searches pages referenced by the Pasteur Institute Web server in its biology "pointers" pages, "Molecular Biology on the Web." In English and French.
- BioInteractive
- Tutorials, lectures, and interactive demonstrations on a variety of biology topics. From the Howard Hughes Medical Institute.
- Discovering Biology in a Digital World
- Sandra Porter's thoughts on biology, teaching, life, and exploring the living world via the digital one.
- What is Life
- Supports scientific literacy and introduces the general public to conceptual thinking in biology.
- Biomedscience
- Offering a collection of resources and information for biomedical scientists and the SOP bank.
- Biology of B-Movie Monsters
- Offers a biologist perspective on the shrinking people and gigantic creatures of 1950s horror movies.
- Lexicon EncycloBio
- Provides biological terms, definitions with pictures, and Flash movies. Includes an internal search engine.
- Biology Century
- Presents a summary of knowledge of the Biological Sciences as we enter the 21st century and introduces users to the chemical basis of life, cell mechanisms, DNA, speciation, and other major biological concepts.
 Bio-Singapore.com
- National web site providing information on life sciences, biotechnology, and biomedical sciences activities.- Digital Nature Guide
- Free software that allows you to make and to view natural history guides for any type of animal or plant.
- Life's Big Instruction Book
- Offers an introduction to modern biology and biotechnology.
- BIOSCI
- A set of electronic communication forums - the bionet USENET newsgroups and parallel email lists - used by biological scientists worldwide.
- Biology News - ScienceDaily
- Find full-text biology news, articles, and photos from research institutes around the world.
- Biology News - Scientific American
- Features biology news, feature articles, expert commentary, video news, and more.
- Encyclopedia of Life
- Encyclopedia of Life is an ecosystem of web sites that makes all key information about life on Earth accessible to anyone, anywhere in the world.
- Entangled Bank: Dr. Paul's Virtually Biology Show
- Offers a virtual biology course, a biology dictionary, links to interesting biology sites and news articles, and information about his courses at Johnson County Community College.
- Poisonous Plants and Animals
- Species are described and classified according to their habitat and biological origin.
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