- http://www.aaas.org/ - American Association for the Advancement of Science - The American Association for the Advancement of Science, "Triple A-S" (AAAS), is an international non-profit organization dedicated to advancing science around the world by serving as an educator, leader, spokesperson and professional association. In addition to organizing membership activities, AAAS publishes the journal Science, as well as many scientific newsletters, books and reports, and spearheads programs that raise the bar of understanding for science worldwide.
- http://www.eoearth.org/ - Encyclopedia of the Earth - "The Encyclopedia of Earth (EoE) is an electronic reference about the Earth, its natural environments, and their interaction with society. The EoE is a free, expert-reviewed collection of content contributed by scholars, professionals, educators, practitioners and other experts who collaborate and review each other's work. The content is presented in a style intended to be useful to students, educators, scholars, professionals, as well as to the general public."
- https://www.nhgis.org/ - National Historic Geographic Information System - The National Historical Geographic Information System (NHGIS) provides, free of charge, aggregate census data and GIS-compatible boundary files for the United States between 1790 and 2010.
- http://www.nsta.org/ - National Science Teachers Association - National Science Teachers Association publishes "books and journals for science teachers from kindergarten through college" and hold four annual conferences "on science education: three regional events in the fall and a national gathering in the spring.
- http://profiles.nlm.nih.gov/ - Profiles in Science from the National Library of Medicine - "The National Library of Medicine is making the archival collections of leaders in biomedical research and public health available on its Profiles in Science web site. The site...promotes the use of the Internet for research and teaching in the history of biomedical science. Many of the collections have been donated to NLM and contain published and unpublished items, including books, journal volumes, pamphlets, diaries, letters, manuscripts, photographs, audiotapes, video clips, and other materials."
- http://www.scicentral.com/ - SciCentral - Labeled "Gateway to the best
science news sources," SciCentral pulls research news from the most reputable and reliable sources and makes it available in one location.
- http://www.science.gov/ - Science.gov - Science.gov searches over 50 databases and over 2100 selected websites from 12 federal agencies, offering 200 million pages of authoritative U.S. government science information including research and development results.
- http://www.plos.org/ - Public Library of Science - Public Library of Science (PLOS) is a nonprofit publisher, membership, and advocacy organization with a mission to accelerate progress in science and medicine by leading a transformation in research communication.
- http://www.plosone.org/ - PLOS One - Science and medicine research articles, peer-reviewed, and available to the public.
- http://www.plosbiology.org/ - PLOS Biology - Biology research articles, peer-reviewed, and available to the public.
- http://www.plosmedicine.org/ - PLOS Medicine - Medicine research articles, peer-reviewed, and available to the public.
- https://www.elsevier.com/authors-update/story/access-to-research/6-ways-to-find-elseviers-open-access-content - Elsevier Open Access Journals - All articles published in Elsevier open access journals are peer reviewed and upon acceptance will be immediately and permanently free for everyone to read and download.
- http://www.scirp.org/ - Scientific Research Publishing - (SCIRP: http://www.scirp.org) is an academic publisher of open access journals. It also publishes academic books and conference proceedings. SCIRP currently has more than 200 open access journals in the areas of science, technology and medicine.
- http://www.doaj.org/ - Directory of Open Access Journals - Directory of Open Access Journals is a service that provides access to quality controlled Open Access Journals. The Directory aims to be comprehensive and cover all open access scientific and scholarly journals that use an appropriate quality control system, and it will not be limited to particular languages or subject areas.
- http://news.sciencemag.org/ - The American Association for the Advancement of Science, News - "Your gateway to daily news about research (collected on our ScienceNOWwebsite) and science policy (on the ScienceInsider website). This free content is produced by ScienceMagazine's award-winning team of journalists."
- http://www.newscientist.com/ - New Scientist - The New Scientist offers up-to-date news articles and "carries an archive of over 76,000 content pieces... [and is] considerably enhanced by an international online news team, posting updates every day."
- http://www.scicentral.com/ - SciCentral - This website aggregates "breaking research news from the most reputable and reliable sources."
- http://www.sciencedaily.com/ - Science Daily - This freely accessible science news website has "over 65,000 research articles, 15,000 images, 2,500 encyclopedia entries, 1,500 book reviews, and hundreds of educational videos....the site covers discoveries in all fields of the physical, biological, earth and applied sciences."
- http://www.sciencenews.org/ - Science News - Science News is a "biweekly news magazine [that] covers important and emerging research in all fields of science. It publishes concise, accurate, timely articles that appeal to both general readers and scientists."
- http://www.scientificamerican.com/ - Scientific American - "A dynamic resource that includes select articles from current and past issues, online-only features, daily news, topic-driven blogs, podcast series, and a video directory.
- http://animaldiversity.org/- Animal Diversity Web at the U. of Michigan - "Animal Diversity Web (ADW) is an online database of animal natural history, distribution, classification, and conservation biology at the University of Michigan."
- http://arxiv.org/ - ArXiv.org - Cornell University provides open access to "725,963 e-prints in Physics, Mathematics, Computer Science, Quantitative Biology, Quantitative Finance and Statistics."
- http://www.amnh.org/our-research/darwin-manuscripts-project - Charles Darwin's Scientific Manuscripts - On this site you will find the manuscripts that record Charles Darwin's work as a practicing scientist. Whether you are a student or a researcher, our goal is to offer you digital access to the primary evidence for the birth and maturation of Darwin's attempts to explore and explain the natural world.
- http://darwin-online.org.uk/ - Complete Work of Charles Darwin Online - "This website contains over 100,000 pages of searchable text and 214,000 electronic images...both as searchable text and electronic images of the originals...This website also provides the largest collection of Darwin's private papers and manuscripts ever published."
- http://eol.org/ - Encyclopedia of Life - "Our knowledge of the many life-forms on Earth - of animals, plants, fungi, protists and bacteria - is scattered around the world in books, journals, databases, websites, specimen collections, and in the minds of people everywhere. Imagine what it would mean if this information could be gathered together and made available to everyone – anywhere – at a moment’s notice. This dream is becoming a reality through the Encyclopedia of Life."
- http://mol.org/ - Mapping Life - A Google map that allows you to see where different species live geographically across the Earth.
- http://icep.wikispaces.com/ - Indiana Cheminformatics Education Portal - The Indiana Cheminformatics Education Portal (ICEP) is a repository of freely accessible cheminformatics educational materials.
- http://physics.aps.org/ - American Physical Society - Physicists are drowning in a flood of research papers in their own fields and coping with an even larger deluge in other areas of physics. How can an active researcher stay informed about the most important developments in physics? Physics highlights a selection of papers from the Physical Review journals. In consultation with expert scientists, the editors choose these papers for their importance and/or intrinsic interest.