Non-profit EnviroLink Network is a clearinghouse for environmental information on the Internet, featuring daily news, sustainable business information, active user-forums, natural products and a library of environmental resources on the Internet.

Center for International Earth Science Information Network, Columbia University -- Information resources on many topics related to the earth and its environment.

Discussions about the environment and efficient living ideas. Links to sites of environmental interest.

"A place to help save the earth" : renewable energy, eco-investments, eco news, many eco-links, green shopping and resources for environmental activists.

Search for information on conferences, professional services, government agencies and organizations; register for mailing lists. Mostly North American.

Includes a library of research materials for the study of the environment, as well as archives for several environmental science list-serves.

Directory of environmental businesses for the USA and Canada, plus collections of informational links on a range of environmental topics.

A sizeable library of links to environmental information resources on the web. Categories include companies (consulting, laboratories, suppliers), education, employment, government, organizations, remediation, water resources, and web directories.

Guide to environmental and transportation acronyms and abbreviations, annotated with Web links to sites related to many of the acronyms.

A consortium of eight regional pollution prevention information centers, which provide pollution prevention information, networking opportunities and other services to States, local governments and technical assistance providers.

Features environmental links, information, and activism on the world wide web.

Access to integrated social and natural science data by the Center for International Earth Science Information Network at Columbia University.

"World Environmental Organization" lists links to 1000 "top environmental sites." Also has environmental news, tips for sustainable living, and information on how to recycle a variety of materials.