This article explores how Euclid's ancient geometry interacts with all aspects of human thought and life.

We celebrate the most famous of mathematical constants with a circle puzzle.

The impossible becomes possible when you move into the third dimension.

A quick look at an ancient problem.

A brand-new pentagon to tile your wall with.

How calculating the height of a frustum gave a glimpse of the mathematical frontier.

How longitude presented one of the greatest problems in history.

What are global coordinates?

The division of plant cells is governed by their shape – just one example of how maths may reveal the fundamental laws underlying biology.