The world we live in is made up of particles of matter. And all of these particles have an antimatter equivalent – identical in every respect, but with an opposite charge. 

So the familiar electron, for example, with a negative charge -1, has an antimatter equivalent called a positron that has a charge of +1. 

One of the great mysteries surrounding antimatter is why there isn't more of it around. According to the best models we have of the early universe, the big bang should have produced equal amounts of matter and antimatter. 

Why, then, do we live in a universe dominated by matter? Many theoretical answers have been proposed, with experimental tests being carried out at CERN near Geneva, Switzerland.

RAZOR's Neil Cairns visits CERN's world-leading antimatter factory, where cutting-edge experiments are trying to solve the mystery of the missing antimatter.