ASTRONOMY AND SPACE SCIENCE:

NASA SpaceLink: An Aeronautics & Space Resource for Education
http://spacelink.msfc.nasa.gov/index.html
Lots of great information about human space flight, aeronautics, and space science.

Nine Planets
http://www.seds.org/billa/tnp/
Shows photos taken from outer space and tells what we now know about the sun, the nine planets that orbit the sun, comets, asteroids, and other small bodies found in space.

Star Date Online
http://pio.as.utexas.edu/
Articles about astronomy and a day by day tip sheet on what to look for in the night skies.

Animal Diversity Web
http://animaldiversity.ummz.umich.edu/index.html
Identifies the phyllum, class, order, family, and genus-species name of thousands of animals. Also provides links to webpages about each animal.

Audubon's Birds of America
http://employeeweb.myxa.com/rrb/Audubon/
This is an online version of John James Audubon's Birds of America (1844) with his original observations and hand-colored etchings of 435 birds. Sound files of many bird calls are also included.

BioTech's Life Science Dictionary
http://biotech.icmb.utexas.edu/search/dict-search.html
Online dictionary covering more than 8,300 biochemical, biotechnological, botanical, cellular, and genetic terms.

Birmingham Zoo - The Animal Omnibus
http://www.birminghamzoo.com/ ao/
Links to sites with information about amphibians, arthropods, birds, dinosaurs, fishes, mammals, mollusks, and reptiles.

Common Butterflies of North America
http://www.mesc.nbs.gov/butterfly/north_america/north_america.html
Photographs of 21 common butterflies found in the U.S. and Canada, among them the Monarch, Cabbage White, and the Black Swallowtail.

CSUBIOWEB
http://arnica.csustan.edu/index.html
California State University mega site with links to organizations, associations, and research institutions with information on agriculture, behavioral biology, biodiversity, botany, developmental biology, entomology, genetics, herpetology, ichthyology, invertebrates, and dozens of other biological sciences topics.

Desert Plants & Wildflowers Index - Desert USA
http://www.desertusa.com/flora.html
Photographs and information about wildflowers, cacti and succulents, trees, shrubs, and grasses found in the deserts of the western United States. There are also links to desert minerals and geology, animals, people and cultures.

Minnesota Department of Natural Resources
http://www.dnr.state.mn.us/
The Minnesota DNR web site includes information on wetlands conservation, endangered and threatened species, plant invaders, prairie restoration, Minnesota parks and wildlife refuges, lake maps, and more.

Minnesota Zoo Information
http://www.wcco.com/partners/mnzoo/information.html
Click on "Tour" for background information and photographs of many of the animals at the Zoo.

PCA Alien Plant Working Group - Fact Sheets Section
http://www.nps.gov/plants/alien/factmain.htm
Fact sheets from the National Park Service about Eurasian milfoil, purple loosestrife, Russian olive, and other plant invaders - where they came from and why they are a threat to native species.

The Virtual Library of Ecology and Biodiversity
http://conbio.net/VL/browse/ 
Links to global sustainability, history of life, endangered species, captive breeding, exotic introductions, pollution, human population, habitats, protected areas, biodiversity, government issues and legislation, international treaties, and conservation education.

SparkNotes: Chemistry 
http://www.sparknotes.com/chemistry/.dir/
Review of basic chemistry course with information about the periodic table, bonding, stoichiometry, gases, solutions, acids and bases, electrochemistry, kinetics of reactions, and organic chemistry.

SparkNotes: Physics 
http://www.sparknotes.com/physics/.dir/
Review of basic physics course with information about vectors, kinematics, dynamics, work and energy and power, linear momentum, rotational motion, oscillations, gravitation, thermodynamics, magnetic forces and fields, optics, and special relativity.

Web Elements - Periodic Table
http://www.shef.ac.uk/chemistry/web-elements/index.html
Mark Winter of the University of Sheffield in England has created this informative and entertaining (it has cartoons!) description of the elements that make up matter.

Environmental Sites on the Internet
http://www.lib.kth.se/~lg/envsite.htm
Extensive links to sites with environmental information including acid rain, acoustic ecology, air pollution, alternative technology, biofuels, and biodiversity.

EPA Global Warming Site
http://www.epa.gov/globalwarming/
What is the relationship between greenhouse gases and global warming? Why is global warming a problem?

Mineral and Gemstone Kingdom
http://www.minerals.net/
Tells how to identify hundreds of rocks, minerals, and gemstones.

Nobel e-Museum
http://www.nobel.se/nobel/alfred-nobel/index.html
Has biographical information about Alfred Nobel and Nobel Prize laureates. For photographs, biographical sketches and other information about Nobel Prize winners, click on either physics, chemistry, medicine, literature, peace, and economics, then on "Laureates".

WWWVL History of Science, Technology and Medicine http://www.asap.unimelb.edu.au/hstm/hstm_biographical.htm
Links to sites with biographical information about scientists, physicians, and inventors. Click on "Scientific Fields" for links to the history of various branches of science.

PubSCIENCE
http://pubsci.osti.gov/
Search over 1,000 scientific and technical journals for citations to articles. Most of these articles are available on interlibrary loan.

Scientific American - Featured Articles
http://www.sciam.com/featarch.html
Feature articles from Scientific American published between 1996 and the present month can be found here. Some of the past stories have been about water use, fiber optics, Alzheimer's Disease, cloning, wireless technology, global warming and genetic engineering.