Unsolved Problems in Science

http://ax3.in/top-ten-unsolved-problems-of-science.html
http://unsolved.com/

Invention / Famous / Spot / In Class / Top 50

http://en.wikipedia.org/wiki/Invention
http://inventors.about.com/od/astartinventions/a/FamousInvention.htm
http://inventorspot.com/
http://edtech.kennesaw.edu/web/inventor.html
http://www.popularmechanics.com/technology/gadgets/news/2078467

Forums

www.thescienceforum.com/
www.scienceforums.net/
www.sciencechatforum.com/
www.groupsrv.com/science/
www.sciforums.com/

journalism / Online Course

http://en.wikipedia.org/wiki/Science_journalism
http://www.wfsj.org/course/en/

Image Gallery

http://sify.com/news/gallerylisting/category/science.html

List of scientific journals / Open Access

http://en.wikipedia.org/wiki/List_of_scientific_journals
http://www.doaj.org/doaj?func=subject&cpid=147
http://www.academicjournals.org/journals.htm

Animations Movies & Interactive Tutorials

http://www.lonestar.edu/

Games

http://www.csun.edu/science/ref/games/
http://nobelprize.org/educational_games/

Photo

http://www.sciencephoto.com/

Discovery

http://discovery.com/

Daily / News

http://www.sciencedaily.com/
http://www.sciencenews.org/

Channels

http://www.youtube.com/user/ScienceChannel
http://www.channel4.com/programmes/tags/science-nature-and-the-environment

Why / How Stuff Works

http://www.letstalkscience.ca/main/science_as_a_platform/
http://science.howstuffworks.com/