Why do stars twinkle?
Do stars actually twinkle, or is it just an illusion? Find out with this easy experiment using a torch, a bowl of water, a pen and some tin foil.
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!