cool cell animations of replication, translation, transcription, synthesis, etc. Tons of different cell functions are capture here.

Bryn Mawr organizes this site. It has a lot of student generated work on it along with some really great links to some very focused topics/ articles in the sciences including sleep, computer-science issues, the brain, teaching strategies, etc. Well worth checking out. Some great hands-on student activities are included. content changes with pretty decent frequency

stunning glass sculpture of viruses and bacteria. artist's intent is to highlight the irony b/w things that can look so beautiful but be so deadly. teaching tool: allow students to really see these microscopic organisms, let you appreciate different shapes, dimensions

amazing computer generated images of proteins. lets you see the patterns, repetition, complexity, and 3-D shape of proteins. could be used as a great intro tool to Proteins.

This site has links to videos, Ted Talks, University sites with great links to lessons/ conversation starters, etc around all the sciences. a great one-stop shopping facility for great supplements to classroom content.