Denotes resources suitable for students in elementary and middle grades
Web resource 
Available with Skokie Public Library card 
Available in Library only
General Science Sites
EurekAlert!
Reference Desk
This website links to glossaries and dictionaries from several scientific disciplines including business and economics, earth science, education, health, ethics, technology, and more.
How Stuff Works
Created by author and former professor of computer science Marshall Brain, this site provides explanations of how many things work including VCRs, web pages, and smoke detectors.
SciCentral
Maintained by scientists and covering one-hundred twenty specialties in science, medical research, and engineering, SciCentral.com contains resources for students, scientists, and those in between.
Science Online from Facts on File
Science Online contains scientific information for students in all areas of science. Use this resource to find science experiments, videos, diagrams, articles, and biographies of famous scientists.
Science Timelines
This site contains timelines from prehistoric times to the present in the areas of astronomy, chemistry, earth sciences, materials, and physics.
Science.gov
Science.gov is a gateway to reliable science and technology information from many United States government agencies. Resources includes technical fact sheets, reports, journal citations, databases, and links to United States government websites.
Astronomy
North
American Skies
View a sky chart of the stars and planets in the night sky as viewed from North America in mid-month. The sky chart is updated monthly.
Sky & Telescope
This site contains updated information on astral and planetary viewing including astronomy tips and a customizable sky chart.
U.S. Naval
Observatory - Astronomical Applications Data Services
Use this website to find information about sunrise, sunset, moonrise, and moonset for locations around the world. Additional resources include eclipse information and other astronomical data.
Biology
All About Birds
From the Cornell Lab of Ornithology, this site provides a guide to observing and identifying birds and contains a detailed guide to individual species.
Anatomy of the Human
Body from Bartleby.com
The online version of the classic 1918 publication, Gray's Anatomy of the Human Body, contains over 1,200 engravings—many in color—and a subject index with 13,000 entries.
Animal
Diversity Web
From the University of Michigan Museum of Zoology, this site is a large searchable encyclopedia of the natural history of animals.
Atlas of the
Body from the American Medical Association
Browse this atlas of the human body by major section (brain, circulatory system, muscles, respiratory system, nervous system, female reproductive system) or by subsections, such as the hand or skull.
eNature
From the National Audubon Society, this website contains field guides covering 4,800 plants and animals. Use the ZipGuides feature to enter a zip code and find information about animals within a specific area.
FishBase
This database contains information about more than 25,000 species of fish.
Insects.org
An online guide to insects with articles and pictures of selected insects along with links to other insect related websites.
Plants Database
From the United States Department of Agriculture Natural Resources Conservation Service, this website contains detailed information and photographs of thousands of plants native to the United States and its territories.
Tom Volk's Fungi
This site contains photographs and detailed information about thousands of species of fungi from around the world.
Chemistry
ChemFinder.com
Search by chemical name, formula, molecular weight, or CAS Registry Number to find detailed information on chemicals and molecules.
ChemInfo
Chemical Information Sources
From Indiana University, this site is a guide to chemistry resources on the Web.
NIOSH Pocket Guide to Chemical Hazards (NPG)
From the National Institute for Occupational Safety and Health, this site compiles general information on several hundred chemicals/classes for workers, employers, and occupational health professionals.
Periodic Table of
the Elements
Provided by Los Alamos National Laboratory Chemistry Division, this interactive Periodic Table of the Elements includes detailed information about each element. Other resources include instructions for using the Periodic Table, Mendeleev's original Periodic Table, and a downloadable version of the entire website.
WebElements Periodic
Table Professional Edition
This detailed guide to the elements and the periodic table includes images and crystal structure. The site also maintains a Scholar Edition of the Periodic Table especially for students.
Converters
Convert-It!
This collection of conversion tables will help you "convert just about anything to anything": volume, area, energy, length, mass, pressure, temperature, velocity, and more.
MegaConverter2
This website provides an ever-growing set of weight, measure, and unit conversion/calculation modules.
OnlineConversion.com
This site provides conversions for over five thousand different units in twenty-nine different categories.
time and date.com
This site provides information on time zones for individual cities in the world and includes a time zone converter. It also offers a guide to Daylight Savings Time.
Environment
Earth 911
Use this website to find the nearest recycling centers for various products.
Right to Know Hazardous Substance Fact Sheets
From the New Jersey Department of Health and Senior Services, this site contains detailed descriptions of hundreds of hazardous substances.
Solid Waste Agency of Northern Cook County
This site contains information on materials and locations for recycling in the Skokie area.
Geology
Earthquake Hazards Program
From the U.S. Geological Survey, this site contains information on earthquake activity across the United States and includes a list of significant earthquakes around the world.
Global Volcanism
Program
From the National Museum of Natural History, this site provides information about volcanoes from around the world and their activity.
Mathematics
Math.com
This detailed site offers explanations, examples, and formulas for all types and levels of mathematics.
MathWorld
MathWorld is a comprehensive and interactive mathematics encyclopedia intended for students, educators, math enthusiasts, and researchers.
Purplemath
An online tutorial for mathematics emphasizing algebra and word problems.
Webmath
This website contains a collection of interactive "problem solver" tools to help you find explanations for how to perform easy to complex mathematical operations.
Weather
National
Weather Service Forecast Office: Chicago
Find current Chicago-area weather conditions and forecasts at the National Weather Service website. Other resources include weather summaries, sunrise and sunset times, temperature extremes, and daily weather statistics.
USA
TODAY Weather
From the USA Today website, find current weather conditions and forecasts from around the globe. The site also includes a weather almanac.
Weather Underground
Search this website for detailed weather information and historical reports for over sixty thousand United States and international cities.
weather.com
From The Weather Channel, this website provides a quick check to find United States weather forecasts by city and global forecasts by country.
WorldClimate
The WorldClimate database contains over 85,000 records of historical weather averages from a wide range of sources, allowing you to find out "what the weather is normally like" in thousands of cities around the world. WorldClimate does not provide current weather forecasts or reports.