Why do we get brain freeze?

This question was asked by Sarah from Chichester, UK. Brain freeze, or to give it its proper name sphenopalatine ganglioneuralgia (I…

How can you print a prosthetic?

A prosthetic is an artificial limb or body part, created to replace a part that is damaged or missing. Traditional…

A year in space

On the 27th March 2015, three astronauts will travel from Earth to the International Space Station (ISS). One of them,…

Why is the Sun hot?

This question was asked by Betty in Birmingham, UK.  The simple answer to this question is that the Sun is…