There are separate categories for many different branches of science. Please submit your site to the most appropriate category. Submitting to an incorrect category may delay review of your site.
Please submit only websites that have English language content to this category and its subcategories. If your site is in a language other than English, please submit it to the appropriate category of World.

This category is for sites about scientific institutions and university departments doing scientific research and providing scientific educational programs in more than one branch of science.

Please submit sites that belong to the science and practice of agriculture.

Do not submit company websites that sell agricultural products. Please submit these to the appropriate Business or Shopping category.

If the topic is more focused on a local area of the world, such as farming techniques in Malaysia, please submit your site to the appropriate Regional category.

This category is for English language sites. Please submit non-English sites to the most appropriate World category.

The science and technology of growing living things (plants and animals) for human consumption or use as pets, ornament, food, fiber, or construction material. Includes Forestry, Horticulture and Soil Science.

This category includes a wide range and variety of topics dealing with alternative or "out of the mainstream" science. This includes unexplained phenomena, alternate theories, strange animals or people, and many others. Try to find the single best subcategory for your site.

Psychic phenomena, UFOs, ghosts, and reincarnation are related subjects that sometimes are addressed on Alternative Science websites listed in this category, but they are primarily covered in other categories. If you are submitting a site on one of these topics, consider submitting to one of the following categories, as appropriate:

Society/Paranormal/Psychic/
Society/Paranormal/UFOs/
Society/Paranormal/Ghosts/
Society/Religion_and_Spirituality/Reincarnation/

Science is constantly reshaping itself through unexpected observations, new ideas, and revisions to old theories. While terms like "anomalies" or "alternative" may seem pejorative from an orthodox perspective, from an historical view these are the topics are the very life-blood of science. We must have heretics and revolutionaries challenging our beliefs, and advancing the state of the believable, otherwise science will stagnate into dogma.

Please submit your site to the most appropriate category. Submitting to an incorrect category may delay review of your site.
Please submit only websites that have English language content to this category and its subcategories. If your site is in a language other than English, please submit it to the appropriate category of World.

Astronomy is the study of the physical and chemical properties of the stars, planets, galaxies and the universe, as we know it, today and in the past.
Sites about astrology or horoscopes should be submitted to Astrology.

No sites are listed at this level. Please submit your site to the most appropriate sub-category. Submitting to an incorrect category may delay review of your site.
Please submit only websites that have English language content to this category and its subcategories. If your site is in a language other than English, please submit it to the appropriate category of World.

Biology is the branch of science which studies living organisms and how they interact with each other and their environment. It examines the structure, function, growth, origin, evolution, and distribution of living things. It also classifies and describes organisms and their inter-relationships.

There are separate categories for Chats and Forums in many of the different branches of science.
Please submit your site to the most appropriate category. Submitting to an incorrect category may delay review of your site.
Please submit only websites that have English language content to this category and its subcategories. If your site is in a language other than English, please submit it to the appropriate category of World.

Contains newsletters, newsgroups, forums, message boards, and chat rooms which discuss broad science related topics. Also provides links to categories for "chats and forums" focused in a particular field of science.

Sites about chemical businesses or industry are not listed in this category. See Business/Chemicals and Business/Industrial_Goods_and_Services/Engineering/Chemical instead.

Sites about chemical engineering should go to Science/Technology/Chemical_Engineering.

Chemistry is typically defined as the science that studies the composition, structure, and transformation of matter. It has been called "the central science" because of the way it is related with all the other sciences. Chemistry bridges the gap between physics and biology; it is a "helper science" in almost many technical disciplines; and it occupies a prominent position in industry between the extraction of raw materials and the manufacture of finished products. Of course, it is chemists who call it this way; other scientists may have different perspectives. Chemistry is also distinguished from some other sciences because it creates its own object of study: chemists can imagine and create new compounds that have never existed in nature, so they are not constrained to what already exists, but only to what can be done.

Please submit your site to the most appropriate category. Submitting to an incorrect category may delay review of your site.
Please submit only websites that have English language content to this category and its subcategories. If your site is in a language other than English, please submit it to the appropriate category of World.

Contains Internet directories with links relating to the field of science. All directories pertaining to a particularly branch of science are to be found within the category for that branch.

Submit sites to this category that pertain to the study of the physical properties of the land, inland waters and oceans.

Sites that are about maintaining the health of the earth''s systems, such as the animal and plant life, should be submitted to the Science/Environment category.

Earth science, also known as geoscience, is the study of the physical properties of the land, atmosphere, inland waters and oceans on earth.

Sites included here are non-commercial sites about products and services that help teachers and students with general science education classes or cover several, different specialized areas of science.

If the educational products and services that are listed on the page refer to a specific branch of science, please submit the webpage to one of the subcategories listed for the field.

If the educational products and services cover the broad field of general education, please submit your webpage to Reference/Education/Products_and_Services.

Submit commercial online shopping sites for recreational learning products at Shopping/Recreation/Science_and_Nature.
Please submit only websites that have English language content to this category and its subcategories. If your site is in a language other than English, please submit it to the appropriate category of World.

Science educational resources are educational products and services for teachers and students in the general field of science or cover more than one specialty in science. Some examples of webpages to be listed here include science workbooks, class activities, lesson plans, and mentoring programs.

Please only submit sites which allow for online job posting, and searches with immediate results. All other job related services should be placed elsewhere.

more information (editors only)

Webpages that offer advice and employment information for careers in the sciences.

This category is for scientific content about studies focusing on preserving the land, water and atmosphere systems to be habitable for humans and animals. Websites about environmental issues should be listed in Society/Issues/Environment.

This is not the right category websites about the biology or conservation of specific animals. For appropriate placement of these sites, see "Where should I submit my website about animals?".

Websites for local environmental organizations or about environmental topics in your city, town, province, county, country, state, or region should be listed in the "Science and Environment" subcategory for your geographic area, found in Regional. Local sites judged to be of broad topical interest may also be listed here.

Environmental consulting and closely related products and services should be listed in an appropriate subcategory of Products and Services.

Scientific aspects (and many non-scientific aspects) of environmental protection, natural heritage conservation, sustainable living, environmental impact of technologies, and global environmental change. Environmental Science involves the focused application of many other fields of science and engineering, and therefore is related to Biology, Earth Sciences, Chemistry, Physics, Engineering, and the Social Sciences. All resources are organized in subcategories of Science:Environment. For general environmental science topics, start with Directories, Organizations or Journals. For environmental consulting and other products and services see individual topic listing or Products and Services

Please submit events to either of the two sub-categories, depending on whether they are primarily aimed at the scientific community or at the general public. Please note also that the Science/Events/Conferences category is for interdisciplinary events; conferences restricted to one discipline should be listed under that discipline, for example Science/Physics/Conferences for a physics conference.

This category contains listings of science-related events. Events for the general public can be found in the sub-category Science/Events/Science_Festivals, while events for scientists themselves are in Science/Events/Conferences.

Please submit English language sites that relate to companies that supply scientific lab or research equipment, as well as repair services for these items.

The title should show the company name and the description should consist of a couple of sentences describing the product line or lines.

Please try to find the appropriate subcategory for your submission, such as:

• Laboratory Equipment
• Chemistry Products and Services
• Biology and Biotechnology Supplies

Industrial scale devices, as opposed to research equipment should be submitted to the appropriate subcategory of the
Industrial Goods and Services categories.

Healthcare supply sites should be submitted to:
Healthcare Products and Services.

Scientific instruments and supplies includes consumable supplies, measurement instruments, lab equipment, related repair services for professional scientists, teachers and researchers within the science fields.

Please submit sites that have substantial information about math in general that doesn''t fall into any of the math subcategories listed.

Math or mathematics is the study of numbers and variables representing numbers to solve everyday problems, learn about the world around us or to be an exercise in logical reasoning.

Some applications of math are in the areas of finance, physics, sociology, computer programming, fractal music and geometric art.

Methods and techniques that are useful in a broad range of scientific and engineering applications include statistical methods, analytical chemistry, crystallography, microscopy and microanalysis, geographic information systems, and electronic data acquisition. Because many methods and techniques are themselves important fields or subfields of science addressed elsewhere in the Open Directory, this category contains numerous cross-links to other categories.

There are separate categories for News in many of the different branches of science.
Please submit your site to the most appropriate category. Submitting to an incorrect category may delay review of your site.
Please submit only websites that have English language content to this category and its subcategories. If your site is in a language other than English, please submit it to the appropriate category of World.

Current news and features about science and technology.

There are separate categories for Organizations in many of the different branches of science.
Please submit your site to the most appropriate category. Submitting to an incorrect category may delay review of your site.
Please submit only websites that have English language content to this category and its subcategories. If your site is in a language other than English, please submit it to the appropriate category of World.

Organizations are groups of people working together towards a common goal. This category is for organizations that do not themselves conduct scientific research but aim to spread information about such research. They organize meetings, publish journals and provide research grants for scientists in the field. The category includes scientific and engineering societies and associations, professional societies, museums of science and technology and government science establishments.

This category includes sites about the basic laws of nature, such as the laws of motion, electromagnetism and atomic interactions.

Webpages that focus more on mathematics as it applies to physics should be placed in the Mathematical Physics subcategory.

Webpages that focus on the interdisciplinary topic of combining physics, chemistry, thermodynamics and quantum mechanics should be placed in Physical Chemistry

Submit sites about the study of the nature of space and astral bodies in Astrophysics. But, webpages that offer general statistics and data about the universe should be submitted to Astronomy.

"Physics is the study and application of the fundamental laws of nature, including the laws of motion, gravity, electromagnetism, heat, and microscopic interactions. These laws govern the behavior of objects at all scales, from the smallest subatomic particles to the entire observable universe. In between, physicists study nuclear reactions, the interactions of atoms with light, properties of solids, chaotic dynamics of fluids, and the evolution of stars and galaxies, among many other applications."

If this doesn't tickle your fancy, there is always the quote from Rutherford: "In science, there is only physics; all the rest is stamp collecting."

Please find the scientific subcategory most relevant for your site. Most publications are listed under subject-specific publications categories that are accessible here via links. URLs listed in this category are primarily for broad-scope journals, magazines, and publishers.

Please do not submit URLs for individual articles and books to this category.

Scientific publications include traditional print journals typically intended for professional audiences, printed magazines typically intended for a popular audience, books, and a wide variety of electronic publications. Most publications are listed under subject-specific publications categories that are accessible here via links. URLs listed in this category are primarily for broad-scope journals, magazines, and publishers.

Please submit general science reference materials to this category, such as periodic tables and metric conversion.

Those webpages that cover a single topic area of science, should be listed within that science category.

Includes reference webpages and tools for general science or those that would apply to several different disciplines. Some examples would be lists of constants, measurement conversions, online calculators, formula tables, exact time, properties of materials, and technical standards.

There are separate categories for many of the different branches of science.
Please submit your site to the most appropriate category. Submitting to an incorrect category may delay review of your site.
Please submit only websites that have English language content to this category and its subcategories. If your site is in a language other than English, please submit it to the appropriate category of World.

Most research activities will either occur in academic departments or in research institutes (which may either be in universities or external). Both of these are included in this category.

This category deals with the interaction of science and culture, civilizations, and standard of living.

Please attend to the following guidelines to ensure your site is submitted to the correct category so it can be most quickly added to the directory:

• Sites not in the English language should be submitted to the proper language category under "Science in Society" focuses on the interaction of science and technology with the broader society. Potential topics include (but are not limited to) policy about science and technology, ethics in science and technology, representation of various societal groups in the scientific endeavor, applications of science in law, speculations about future science and technology, and the misuse (or proper use) of science in commerce and public discourse.

Submit only search engines that specialize in general science topics.

Other search engines should be submitted to the correct subcat of the Search Engines category.

Other science websites should be submitted to the appropriate Science category subtopic.

This category lists engines which search databases of scientific information and literature.