How salty is the sea?
We know sea water is salty - with this easy experiment you can find out just how salty it is where you live!
Watch more science videos
What are ocean currents?
Learn the science of ocean currents with Nanogirl marine biologist, Katey Fish.
How to crush a steel drum using air pressure
Go behind the scenes of a Nanogirl Live! show to see how this amazing experiment works!