Calculator On-Line Center
Compiles links to over 15,000 online calculators covering everything from agriculture to weather, as well as mathematics, statistics, science and engineering.

Convert Me: Interactive Units Converter
Provides interactive calculators for many measurement systems. Includes weight and mass; distance and length; capacity and volume; area; speed; temperature; time; pressure; and more.

Everyday Mysteries: Fun Science Facts from the Library of Congress
Did you ever wonder why a camel has a hump? Or why our joints make popping sounds? This site will help you get answers to these and many other of life's most interesting questions through scientific inquiry.

Fort Worth Museum of Science and History

MegaConverter 2
A resource for units, weights, measures, calculators and converters.

National Science Digital Library (NSDL)
A comprehensive source for science, technology, engineering and mathematics education. Funded by the National Science Foundation.

National Science Foundation
An independent US government agency responsible for promoting science and engineering through research programs and education projects.

Science.gov
A searchable gateway to authoritative selected science information provided by U.S. Government agencies, including research and development results. Contains categories such as agriculture & food, biology & nature, environment & environmental quality, and natural resources & conservation.

SciTech Daily
An updated review of science and technology developments - the latest trends, breakthroughs, background, analysis and information.

The Why Files: Science Behind the News
Explores the science behind the news such as why planes crash, how new diseases break out, and why athletes shouldn't use drugs.

Astronomy Magazine
Offers daily astronomy and space news, star charts, pictures of planets, space missions, eclipse and much more.

Eclipse Home Page
Detailed information on forthcoming solar and lunar eclipses and charts, maps, and other information about past eclipses from the NASA/Goddard Space Flight Center.

Imagine the Universe
A glimpse into the mysteries of the universe including what is known about it, how it's evolving, and the kinds of objects it contains.

Mars Exploration Rover Mission
Latest news, press releases, and photos from Spirit and Opportunity.

NASA Homepage
News, links, mission schedules, and NASA for kids.

The Nine 8 Planets
An overview of the history, mythology, and current scientific knowledge of each of the planets and moons in our solar system.

PlanetQuest
Tracks the search for new planets. Learn about planetary discovery, possible habitable planets, instruments and missions. From the Jet Propulsion Laboratory at the California Institute of Technology.

Search for Extraterrestrial Intelligence (SETI) Institute
Provides information about scientific research in the general field of life in the universe with an emphasis on the search for extraterrestrial intelligence.

Sky and Telescope
News, observing tips, how-to advice, and more from Sky & Telescope magazine.

Space.com
Provides information on everything Space - satellites, stars, astronomy, the Sun, planets, NASA and more.

StarDate Online
Offers stargazing tips as well as astronomy resources to teachers, the media and the public from a public education and outreach arm of the University of Texas McDonald Observatory.

Views of the Solar System
Presents a multimedia adventure unfolding the splendor of the Sun, planets, moons, comets and asteroids.

The Biology Project
Excellent tutorials and problem sets for learning Biochemistry, Cell Biology, Developmental Biology, Human Biology, Molecular Biology, Mendelian Genetics and more.

eNature.com
Information on over 4,000 species of North American animals and plants. Content is from Audubon Field Guide books.

Human Genome Project Information
Learn what the project is, its progress, history, issues and goals.

Integrated Taxonomic Information System
Find authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.

All About Birds
Comprehensive information on North American birds including a bird guide, identification tips, and conservation programs.

Animal Diversity Web
An online database of animal history, distribution, classification and conservation biology provided by the University of Michigan.

Animal Information Database
Presents quick, factual information about land and aquatic animals. Provided by SeaWorld Adventure Parks, Busch Gardens and Discovery Cove.

Dallas Zoo

Dinosauria On-Line
Learn about the lives and habitats of dinosaurs. Provides a dinosaur names dictionary, pronunciation guide and maps of the ancient earth.

Fort Worth Zoo

Macaulay Library Animal Sounds and Video Catalog
The world’s largest archive of animal sounds and video.

North American Mammals
A searchable database of all living mammals of North America. Provided by National Museum of Natural History.

Red List of Threatened Species
Provides taxonomic, conservation status, and distribution information on taxa that are facing a high risk of global extinction.

SeaWeb
A multimedia public education project designed to raise awareness of the world ocean and the life within it.

Butterflies and Moths of North America
Provides occurrence maps, species accounts, checklists, and photographs.

Common Insects of Texas
A gallery of images of insects and other arthropods.

Insects on the Web
The fascinating stories of insects and the roles they play in our lives. Cultural entomology, insect macrophotography, educational resources and web links.

Botanical Research Institute of Texas (BRIT)
BRIT is a conservation science organization with programs in research and education. BRIT is dedicated to supporting science and increasing its collections by discovering and documenting plant diversity both regionally and globally, and teaching conservation science through public education.Houses an extensive herbarium and botanical library.

Botany.com
Includes a botanical dictionary and advice for gardeners.

Native Plants Database
Search for native plant info by plant traits or names. Browse through the collection of 17,000 native plant images.

Wildflowers in Bloom
A pictorial resource of wildflower information from the Texas Agricultural Extension Service.

The Chemical Database
Contains names, formulas and registry numbers for 1991 hazardous chemicals. This site was last updated in 1996.

Chemical Elements.com
A useful sight for homework help because it gives a picture of the periodic table of elements, a diagram of the element, and information about the element including the date of discovery, discoverer, and the name origin.

ChemiCool
A clickable periodic table of the elements.

Material Safety Data Sheets (MSDS)
Provides explanations and examples of MSDS and links to 32 Internet sites that provide MSDS. From the Department of Chemistry, University of Kentucky.

MatWeb
A searchable database of over 29,000 materials, including metals, plastics, ceramics, and composites. Search by material type, manufacturer, trade name, or metal and alloy composition. Information includes physical, mechanical, electrical, and thermal properties.

Periodic Table--Web Elements
Use this interactive Periodic Table and get a concise description of the properties for each element, along with its history; uses; compounds; and electronic, physical and nuclear properties.

Drought Monitor
Provides up-to-date information about droughts including a map of the United States showing which areas are in a drought.

Earth and Sky
Home of the award-winning international science news radio program Earth & Sky.

Earth Observatory
Allows user to monitor regional and global changes on our planet almost as they happen.

GreenFILE
This resource offers a unique perspective on the positive and negative ways humans affect the environment. Drawing on the connection between the environment and disciplines such as agriculture, education, law, health and technology, GreenFILE serves as an informative resource for anyone concerned about the issues facing our planet. The database contains nearly 300,000 records, full text for selected titles and searchable cited references for more than 200 titles as well.

National Hurricane Center
Information, warnings and watches for hurricanes over the Atlantic, Caribbean, Gulf of Mexico and Eastern Pacific from the National Hurricane Center in Coral Gables, Florida.

Paleomap Project
Illustrates the plate tectonic development of the ocean basins and continents, as well as the changing distribution of land and sea during the past 1100 million years.

Tornadoes
Learn about tornadoes, what causes them, where they are likely to occur, and safety tips.

U.S. Naval Observatory Data Services
A good site for time of sunrise, sunset, moonrise, moonset and twilight, positions of the sun and moon, and information on eclipses.

Wild World
Provides maps, descriptions, and an index to Earth's diverse eco regions characterized by distinct climate, ecological features, and plant and animal communities.

Window to My Environment
Provides a wide range of federal, state, and local information about environmental conditions and features in an area of your choice either by zip code and city/town. From the U.S. Environmental Protection Agency.

Geology.com
Information about geology and earth science for students, teachers, geologists and anyone who is interested in the earth.

Igneous Rocks
An alphabetical listing of igneous rocks with links to pictures and descriptions.

Metamorphic Rocks
An alphabetical listing of metamorphic rocks with links to pictures and descriptions.

Sedimentary Rocks
An alphabetical listing of sedimentary rocks with links to pictures and descriptions.

United States Geological Survey
Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment.

Algebra Homework Help Center
Hundreds of free tutors -- real people who find pleasure in teaching math.

Calculus on the Web
Get help with calculus. Partially supported by the National Science Foundation.

Math.com
Free math lessons and math homework help from basic math to algebra, geometry and beyond. Solutions for students, teachers and parents.

Math Forum
A comprehensive resource for math education.

MathWorld
Material ranges from undergraduate to research level.

PurpleMath
Practical algebra lessons that emphasize the practicalities of understanding the questions and intelligently and simply arriving at the answers.

PhysicsCentral
Find out how physics is part of your world. Physicists will answer questions on how things work, provide daily updates on physics in the news, describe the latest research and the people who are doing it.

PhysLink
A comprehensive physics and astronomy online education, research and reference web site.

All Science Fair Projects

Science Buddies

Science Fair Central

Science Fair Project Resource Guide

You and Your Science Fair Project

Alternative Fuels Data Center
Provides information on alternative vehicle fuels and transportation technologies and related legislation.

The Energy Report
A reference tool for anyone seeking to understand the current Texas energy environment.

How far is it?
Uses data from the U.S. Census and a supplementary list of cities around the world to find latitude and longitude.

How Stuff Works
Explains hundreds of subjects, from car engines to lock-picking to ESP, using simple, clear language and lots of illustrations.

How Things Work: the physics of everyday life
A guide to how many of the objects around us work, including elevators, nuclear reactors, and vacuum cleaners. Searchable by topic and keyword.

U. S. Patent & Trademark Office
Offers web access to bibliographic and full-text patent databases.