# List by Author: Chris Budd

Inverse problems are mathematical detective problems. They can help solve crimes, are used in medical imaging, and much more.

Many processes, including climate change and the spread of COVID-19, involve a delay. Here's a beautiful equation designed to model such processes.

This puzzle is famous because the accepted answer is counter-intuitive. But is it always correct?

It's one of mathematics' most famous results: every "map" can be coloured using at most four colours. What it doesn't usually apply to, however, are real maps.

The golden ratio has many amazing properties. But is it really a secret of nature and the epitome of beauty?

Inverse problems are mathematical detective problems. They can help solve crimes, are used in medical imaging, and much more.

One of the greatest threats to whales is being struck by ships. Find out how Pythagoras' theorem can help avoid this.

From flocks of starlings to spiral galaxies: this article explores examples of emergent phenomena in nature.

Find out how a square grid and some simple rules can generate complex patterns and life-like behaviour.