Funded by NASA, this highly rated site's objectives are to develop a collective understanding of Earth systems through interdisciplinary, team-based investigations.

Contains information and news about many current issues related to Earth Systems (Safe drinking water, energy, global warming, air, oceans, etc.)

This site is maintained by the Smithsonian's National Air and Space Museum. It provides information and photographs about space travel, science information infrastructure, geography from space, etc.

This is a guide to additional environmental resources which can be found on the Internet. Topics address a wide variety of Earth Systems curriculum issues.

This is a comprehensive online environmental information service.

The purpose of this site is to disseminate information about environmental education and to promote student investigations of current issues.

A vast series of alphabetized links to ecological, biological, and Earth related topics.

This site, sponsored by NSTA and Microsoft, provides field tested high school science curriculum and access to learning resources that are designed to assist teachers achieve the goals set forth in the National Science Education Standards.