General Science Sources

Constants and Equations
Constants and equations in various fields of science and mathematics.

Department of Energy (DOE) Information Bridge
Provides open source to full-text and bibliographic records of Department of Energy (DOE) research and development reports in physics, chemistry, materials, biology, environmental sciences, energy technologies, engineering, computer and information science, renewable energy, and other topics.

EurekAlert!
An online press service created by the American Association for the 
Advancement of Science (AAAS). 

Highwire Press
From Stanford University.  Full text science archives.

PrePRINT Network (Department of Energy)
Preprints in the areas of physics, materials, chemistry, mathematics, biology,
environmental sciences and other areas related to DOE's research interests    are accessible through the Network.

psci.com
A guide to quality Internet resources on public engagement with science and technology.  psci-com offers free access to a searchable catalogue of Internet sites covering public engagement in science, science communication and the interpretation of science in society.

PSIgate: Physical Sciences Information Gateway
"PSIgate is a free service that offers access to high quality Web resources in the physical sciences."

SciCentral
"Gateway to the best scientific research news sources."

Science.gov
Authoritative selected science information provided by U.S. Government agencies, including research and development results.

The United States Geological Survey
Database covering geology, biology, the environment, survey maps, etc. from the U.S. Department of the Interior

Astronomy

NASA Astrophysics Data System

NASA homepage
Information on NASA, astronomy, geoscience, and related technologies

The Nine Planets
Introduction to the solar system from the Lunar Planetary Laboratory, University of Arizona

Views of the Solar System
Archives of photographs, scientific texts, graphs and videos.  Our solar system, space exploration, and space missions are featured

Biology/Botany

ALA Internet Resources - Botany
Bibliography of Internet Resources compiled by ALA. "Putting names and faces to Botany information"

All About Birds
All About Birds from Cornell University's Ornithology Lab

All the Virology on the Web
Pictures of viruses, including emerging and plant viruses, course notes, tutorials, and links

BioOne
Index to articles in bioscience research journals.

BotanyWorld.com
An encyclopedia of plants that includes plant descriptions found by common or scientific name.  Cultivation information is also included.

BUBL LINK
Extensive catalog of biology-related web sites

Cronquist System:  Flowering Plant Family Finder. 
Thousands of botanical links

Entomology Index of Internet Resources
Directory and search engine of insect-related resources

Human Genome Project
Sponsored by the National Institute of Health and the US Department of Energy

PLOS Biology
Public Library of Science: Biology.  "PLoS Biology features works of exceptional significance in all areas of biological science, from molecules to ecosystems, including works at the interface with other disciplines, such as chemistry, medicine, and mathematics." 

Virtual Library of Botany
Subject index to botany.  Site has its own search engine.  Links to newsgroups and 500 scientific journals

Chemistry

American Chemical Society:  ChemCenter
Database searches, educational resources, career information, news from the ACS, etc.

American Chemical Society Online Journals
Allows searching of all ACS journals. Offcampus access requires an A.U. ID number..

BioChemLinks 
A guide to the best biology and chemistry educational resources on the web.

CHEMINFO:  Chemical information Sources from Indiana University
Chemical information sources from Indiana University.  Some resources available on the IU campus only.

Chemistry.org
The website of the American Chemical Society.  Contains new and meeting information as well as other quality chemistry information on the web.

Chmoogle.com
Chmoogle offers chemists access to millions of public domain chemical structures and information about them. It provides very fast substructure searches and results can be shared by email with colleagues. The service is free both for the user and for the provider of data sources.

Fiz Chemie Berlin
This website from Germany includes ChemGuide and MedPharmGuide search engines for chemistry or medicine and pharmacology information in the Internet. PublishersGuide is a search engine covering the web servers of publishers, institutions, societies etc. that publish in the areas of science and technology. (Available in English and German)

Information retrieval in chemistry WWW server
Web site maintained by the Institute of Physical Chemistry. A comprehensive index of more than 60 disciplines and subdisciplines in chemistry.

NIST Chemistry Webbook
On-line chemistry database.   Data can be searched by name, formula, number, etc.

Organic Chemistry Resources Worldwide
Its mission consist in collecting and independently annotating all useful organic chemistry sites and to present them in an intuitive way. 

Sheffield Chemdex
The Sheffield Chemdex: the directory of chemistry on the WWW since 1993.

WebElements.com
Periodic Table of the Elements for Chemistry Students and the rest of us

The Wired Chemist
Periodic Table, links to Internet resources, chemistry modules, problem sets, etc.  Information useful to beginners through professionals.

Environmental Studies

Envirolink:  The On-line Environmental Community
Envirolink library contains links to subjects such as animal rights, biodiversity, recycling, pollution, environmental education, vegetarianism, etc.

Environmental sites on the Internet
Collection of links

National Library for the Environment
Directory of environmental web sites, 600 full-text Congressional Research Reports, links to full-text environmental laws and treaties, etc.

NatureServe

The Virtual library of ecology and biodiversity

Mathematics

Cornell University Library Math Book Collection
Site consists of 571 older mathematics books scanned by the Cornell University Library.

Internet resources for the mathematics student 
Links to topics in algebra, discrete mathematics, statistics, calculus, analysis, etc.  Also, links to mathematical tools, online courses, tutors, and organizations. 

Links to Web sites on the history of Mathematics 
Journals, scholarly articles, books on-line, web resources, etc.

The MacTutor History of Mathematics archive
From the School of Mathematics and Statistics, University of St. Andrews Scotland

Math Archives

Math DL
MAA Mathematical Sciences Digital Library

Mathematical Atlas

Mathematics:  Resources on the Internet from College & Research Libraries News
Links to mathematical societies, directories, databases, math libraries, biographies, etc.

Mathworld

Onlineconversion.com
Converts most measurements, includes over 5,000 units and 30,000 conversions.

Physics

ALA Internet Resources - Physics

Center for History of Physics
by the American Institute of Physics

Climate Diagnostics Center
Created by the Climate Diagnostic Center (CDC). Includes maps, publication information, and climate research data.

Help for Physics Students
Links to physics books, FAQ's, simulations, journals, employment, etc.

Physics 2000
From the University of Colorado at Boulder. "An interactive journey through modern physics! Have fun learning visually and conceptually about 20th Century science and high-tech devices."

Physics web
Physics news, jobs and resources from the Institute of Physics

Web Physics
Web Physics is a flexible low budget outlet for small volume, high quality, html based curricular material.  Materials included are curricula, student work, resources, tools to teach, and links to web resources.

Zoology

AmphibiaWeb
Information on every recognized species of amphibians in the world

Cetacea
A comprehensive, user-friendly site about cetaceans: whales, dolphins, and porpoises.

EMBL Reptile Database
Resource on reptile taxonomy from the German Herpetological Society

Zoological Record
Internet resource guide for zoology