Provides resources on a variety of science-related topics from aeronautics to zoology.

Provides access to the government’s vast stores of scientific and technical information.

Offers the latest news from the science world including some articles in full-text.

"The Online Magazine That's All About Science for the People" published by the National Science Foundation.

Hosted by the Library of Congress, this site contains research guides, bibliographies, webcasts and other visuals for a variety of science topics including microbiology, geology, ecology, and physics.

Hosted by the Loyola University Medical Education Network, this site provides links to informative anatomy web sites.

The National Library of Medicine created this site using donated cadavers to provide "complete, anatomically detailed, three-dimensional representations" of male and female bodies, sectioned at one millimeter (male) and one-third millimeter (female) intervals.

Online anatomy atlas - some content is free.

Offers information on birds including sample sounds and videos, hosted by Cornell University.

Provides information on over 40 species of animals that are endangered.

Hosted by the University of Pittsburgh, this site provides a digitized version of John Audubon's ornithological works including Birds of America and Ornithological Biography.

A database containing information about all birds of the world, containing "over 19 million records about 10,000 species and 22,000 subspecies of birds, including distribution information, taxonomy, synonyms in several languages, and more."

Hosted by Montana State University.

Offers thousands of multimedia files related to the cell.

An online video library of the world's birds.

This site allows users to explore data about the relationships between biodiversity and geography through interactive maps.

Provides a searchable database of 7,009 plant records native to North America and detailed photographs.

Hosted by the University of Minnesota this site offers a collection of databases for plant enthusiasts.

Browse 1,127,000 global plant names, 90,100 detailed descriptions, and 195,100 images.

Website created by the Food and Nutrition Information Center (FNIC) part of the the United States Department of Agriculture. This resource provides a broad range of nutrition resources for health professionals, educators, and consumers.

This site for online flora contains more than 350,000 species.

Provides a set of chapters dedicated to the basics of Chemistry.

An interactive chemistry encyclopedia

"Searching the World's Chemistry"

Look up chemical and physical property data for chemical compounds.

Offers images, descriptions and nuclear/technical data about the elements.

An interactive periodic table where users can click on any element to learn additional information.

This site offers helpful information on all aspects of Astronomy.

Created by the World Bank, this site offers data sets, research papers and other information related to this topic.

"A free resource to help individuals identify and better understand fossil species from particular regions and time intervals."

Using data from various sources, this website, allows visitors to view a, "near real-time visualization of global weather conditions."

Hosted by the United States Geological Survey this site offers helpful earthquake-related information.

Earth/Sun exploration.

Provides information on a wide range of subjects related to the Earth, its natural environments and their interaction with society.

Official Energy Statistics from the US Government.

Provides top news stories related to the environment and has a news archive that dates back to 1970.

This site, from the Smithsonian's National Museum of Natural History, looks at how different types of changes are affecting life on earth.

This site allows users to explore the universe and locate planets and constellations.

This site, from the Space Telescope Science Institute (STSci) home to the space telescope, offers a variety of information about astronomy and stunning images from the telescope.

Comprehensive mineral information and images. By David Barthelmy.

Provides images, videos, podcasts and other resources related to past, present and future NASA missions.

Provides photographs, diagrams, educational resources, and other sources related to the solar system.

Provides environmental news, photos and other resources related to the environment, pollution and conservation.

Includes information about tornadoes, hurricanes, floods, earthquakes, wildfires, and more. Includes fact sheets and short videos.

View scanned images of geologic maps.

Provides a variety of information related to environmental issues.

Provides articles, commentaries, and data sources related to the global climate situation.

A free open source planetarium for your computer

Earth science information and links.

Provides the latest information on climate change.

Provides regional and environmental information including news and United Nations Publications including e-books and annual reports.

Take a tour of any and every geological time period. Hosted by UC Berkeley.

Physics & Astronomy Online.

Offers an online "mini-magazine" and a collection of more than 800 searchable/browsable websites related to Physics.

Your Guide to Physics on the Internet.

Provides an array of web-based information on Physics and other sciences.