New Science onlinetools from BBC.

I found two new onlinetools via Open University
which are a constant source of joy.

Virtual planisphere are a tool where you find star constellations and you can also zoom in to pictures of different objects.

Online Digital Microscope gives you an alternative to study some tissues. There are three different to choose from: Plant, Animal and Microbe. You can zoom in on specific interesting areas and move the tissue around. It is not totally free though.