How do painkillers work?

When you injure yourself you feel pain. Imagine you’ve touched something hot and burned your hand – the damaged cells…

What are gravitational waves?

In 1915 Albert Einstein predicted that when objects with an extremely dense mass collided with each other in space they…

How does the Seabin work?

This question was asked by Jonah from West Sussex, UK. Next time you’re wandering around a harbour or a marina…

How do glasses improve your vision?

Some people wear glasses because they’re long-sighted (hyperopic), which means that they can see distant objects clearly but find it…