From the NASA Ames Space Science Division. All known earth-crossing asteroids are listed, and predictions of asteroid/comet close approaches to the earth.
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Science & Technical
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Astronomy & Physics
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Astronomy
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An interactive exploration of comets. Includes comet anatomy, life cycle, and specifications.
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Site contains a list of meteor showers, observation information, glossary and more.
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Aeronautics and space research information.
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Old Farmer's Almanac lists rise and set times for the sun, moon and planets, eclipse dates, and more.
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Griffith Observatory site includes Sky Report, Eclipses, Moon Phases, Moonrise / Set, Sunrise / Set, Sun's Path, Tide Tables, Astronomical Zodiac, and Planetary Alignments in 2000.
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Everything about planets in our solar system.
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Chemistry
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Includes Acronym database.
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Agency for Toxic Substances and Disease Registry's alphabetical index of toxic substances and diseases.
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Chemistry - Unit Conversion to X-ray Interactions with Matter.
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Locate common types of chemical information. Search by a chemical name, formula, molecular weight, or CAS Registry Number.
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Freie Universität Berlin, Chemistry Department site.
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Complete table of elements, atomic weights, etc.
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Information from the Environmental Protection Agency on toxic substances released in the environment includes State Fact Sheets with facilities and chemicals listed.
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Physics
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Astro-Physical Units to Wave Interaction & Simulations.
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CODATA Internationally recommended values of the Fundamental Physical Constants. Search for value by name (i.e. speed of light).
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Automobiles
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Specifications, parts & services, museums & clubs for American automobiles (antique, classic, vintage and muscle cars) manufactured between 1910 and 1975.
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Provides pricing guides for new and used cars and trucks. Includes road test results, information on recalled vehicles.
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Car prices from the National edition.
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New and used car pricing and car buying information and resources. In addition, the site offers free values for classic cars, motorcycles, antique motorcycles, boats, personal watercraft, snowmobiles, ATVs, RVs, SUVs, trucks, minivans, aircraft and manufactured housing.
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Earthquakes
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Caltech site. Latest seismographic information. Includes maps and historical information.
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United States Geological Survey latest earthquake information.
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General
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Information from Archaeology / Anthropology to Radiation from Martindale's "The Reference Desk."
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Quotations and their source from Archimedes to Wooley.
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This site offers simple, clear explanations of how things work from car engines to VCR's and even bread. You may scroll down the page or click on the Power Panel for a search index.
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More than 4,000 free PDF versions of books published on sciences, engineering and medicine are available.
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Weather forecasts, heavenly details, sun, moon and planets, rise and set times.
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New scientific publication featuring free works of significance in all areas of biological science, from molecules to ecosystems, interfacing with other disciplines such as chemistry, medicine and mathematics. Content will develop as issues are added.
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Index to help identify and locate electronic schematics repair documentation by number.
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Science fair project ideas.
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Provides the necessary requirements and resources to complete a science project. Information supplied by the Internet Public Library.
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From the Library of Congress, contains “Science Tracer Bullets” with histories and bibliographies, along with Science Reference Guides, and Internet Resources covering many science and technology topics.
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The gateway to reliable information about science and technology from across Federal government organizations. Agencies covered are the Departments of Agriculture, Commerce, Defense, Education, Energy, Health and Human Services, Interior; Environmental Protection; National Aeronautics and Space, and National Science Foundation.
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SRS information on 14 periodic surveys.
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Everyday science questions and answers.
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Geology & Oceanography
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10,000 years of volcanic eruptions. Keyword search, alphabetic and geographic indexes.
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Terms, abbreviations, and acronyms used in oceanography and related fields.
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Current global activity.
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Inventors / Inventions
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Life Sciences
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Biology
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Collection of life sciences resources and reference tools with extensive information on biochemistry and biotechnology. Features a life sciences dictionary, chemical acronyms database and annotated web links to other sites.
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Free web site by Biosis offering resources for the life sciences community. Searchable by organism, subject and geographical region.
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An emerging online reference and research tool that aims to document all the species known to humanity. The resource is being built by interactive contributions taken from Google Search, Wikipedia, and interested people. The site is overseen by experts editing the material.
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University of California, Berkeley Museum of Paleontology collection that provides material on phylogeny, geology and evolution, as well as educational materials at the university, K-12, and general interest levels.
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Botany
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California flora data.
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United States Department of Agriculture Natural Resources Conservation Service.
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Zoology
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Information on habitat conservation, threatened & endangered species, wildlife programs.
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Information about U. S. threatened and endangered animal and plant species.
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Comprehensive animal information site. Includes zoo information.
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Dissect a frog without having to touch one.
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Measurements / Mathematics
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Basic Math Calculators, Unit Conversion Calculators, Slide Rule, Arabic / Roman / Mayan, Abacus, Knot Theory, Linear Equations, Logarithms, Math Animations, Trigonometry, and Rational Numbers.
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Includes mathematical notation for orders of magnitude, metric prefixes, and common U.S. and metric equivalents
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Many methods, comparisons and examples.
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“The web’s most extensive mathematics resource”. A comprehensive, and interactive mathematics encyclopedia intended for students, educators, math enthusiasts, and researchers.
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Time Zones / Tides / Sunrise / Sunset
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View a month or year calendar for any year from 1 to 10000 A.D. All leap years and calendar changes are accounted for.
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Current time for U.S. time zones, also includes information about timekeeping history under Time Exhibits.
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Current and 4-day predictions. Some historic information.
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Gives the current times for locations world-wide.
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Weather & Meteorology
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Four-day forecasts. Includes forecasts for AZ, NV, UT. Monthly City Almanac.
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National Oceanic and Atmospheric Administation
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Breaking Weather, Tropical Update, U.S. City Forecasts, International City Forecasts, Maps, and Travel Wise.
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