Science and Technology

Major Sites

New Scientist's Hot Spots
From New Scientist magazine. The Hot Spots web directory is divided into subject categories.

Biological Sciences:

Endangered Species
Links from the Environmental Education on the Internet.

EE (Environmental Education) Link
A directory of high-quality environmental links, arranged by topic. It covers air & climate, endangered species, energy & transportation, population, solid waste, water, wildlife and more. Also includes classroom and profesional links for teachers.

PLoS Biology
Research literature in medicine and science from the Public Library of Science.

U.S. Geological Survey Homepage
Links to biology, geology, mapping and water resources.

Physical Sciences

Views of the Solar System
Discover the latest scientific information on our solar system or study the history of space exploration, rocketry, early astronauts, space missions, and spacecraft through this vast archive of text and photographs. Includes a page on Other Astronomy WWW Resources. Available in English, Spanish, Portugese, French and German.

Links for Chemists
More than 7500 Chemisty-related links from the University of Liverpool in Liverpool, England.

U.S. Geological Survey Homepage
Links to biology, geology, mapping and water resources.

Computers and Engineering

CNET: The Computer Network
The latest computer industry news, product evaluations, how-to's, shareware and more.

Virtual Computer Library
Covers popular aspects of computing and computers in education, with some links to research-oriented sites.

Tucows 
Includes a software library that allows the users to search freeware or shareware for downloading. 

Engineering & Technology
An extensive directory of engineering links.

Mathematics

The MacTutor History of Mathematics Archive Good source of mathematics info for students, including biographies of mathematicians.

WWW Virtual Library: Mathematics

Medicine and Nursing

Healthfinder
An excellent gateway to reliable free consumer health and human services information developed by the U.S. Department of Health and Human Services.

Health Topics A to Z
A listing of disease and health topics from Centers for  

HealthWeb: Nursing
Links to specific, evaluated information resources on the web selected by librarians and information professionals. Includes career information, education, research, and other resources for nurses and nursing students.

PubMed
The National Library of Medicine's search service that provides access to over 10 million citations in MEDLINE, PreMEDLINE, and other related databases, with links to participating online journals. (This source is primarily bibliographic rather then fulltext.)