General Science
Science Buddies
a site devoted specifically to science fair projects
Mad Sci Network
general science education site with science news, science fair project ideas, and a place for posting science questions
The Naked
Scientists
weekly podcast of science news discussed in simple terms as well as "do-it-at-home" projects
PBS
science-related programs and clips
Science.gov: FirstGov for Science
links to science information from various US Government agencies
Scientific American
popular monthly science magazine; web page includes science news, previews of articles, and a weekly podcast
Talk of the Nation, Science Friday weekly radio program discusses newsworthy issues in science