http://www.edhelper.com
Educational resource center filled with links to great educational websites.

http://science.kennesaw.edu/~thowick/sciencelinks.htm#Earth Science
Dr. Tom Howick's page of science links

http://www.teacherweb.com/
Create your own teacher homepage for free.  It's easy--just click and go.

http://exploratorium.edu
Briefly summarize why the information on the site to which you're linking is useful.

http://www.nbpts.org/
National Board for Professional Teaching Standards

http://scssi.scetv.org
South Carolina Statewide Systemic Initiative

http://www.teachersource.com/
Educational Innovations
The Master Teachers source for science workshop

http://www.flinnsci.com/homepage/lindex.html
Flinn Scientific
Freebies for the Science Teacher

http://whyfiles.org/
The Why Files
The science behind the news