A hundred pounds is a lot more to someone who's poor than to a millionaire. But how do you measure such differences? Utility theory has the answer.

How "forced experimentation" can lead to economic benefits.

Game theorists model the evolution of trust and trustworthiness

From Einstein to water power, Plus author Anita King explains where maths has got her.

In the last article of this three-part series, Phil Wilson shows how simple graphs can tell you a lot about the economy — and not only in Slugworld.

The risks in Who wants to be a millionaire?

Riaz Ahmad's mathematical career has led him from the complexities of blood flow to the risks of the financial markets via underwater acoustics. Plus found out how maths can explain all this and more.