The EnviorLink network is distinguished not ony by its content, but also by its many ways of contact. It unites hundreds of organizations and volunteers around the world with millions of people in over 130 countries. It provides curriculum, activites, and reading lists for teachers. It is also good for parents who are trying to keep up with their chidren's growing environmental concerns. A great listing of sites dealing with weather and its related topics.
Users can choose which engines to search, and items retrieved are ranked by relevance.
Boolean searching is supported, as is optional link checking, a more time-intensive process. Duplicate retrievals are removed by the search system. It also provides a full-text index of more than 13,000 newsgroups. Versatile search options allow you to find articles by date, author, subject, and newsgroups. Tracks down information by searching for concepts, not just keywords.