Calum is a lecturer in physics at Edge Hill University where he studies topological solitons and enjoys talking about maths and physics to anyone who will listen. He can often be found on the side of a mountain or out on a bike, talking to himself about solitons.
More from Chalkdust

Oπnions: In defence of toy models
Calum gets on his soap box about toy models
Cryptic wordsearch, Issue 19
Can you solve it?
On the cover: skyrmions
Sven Bjarke Gudnason and Calum Ross introduce you to the wonderful world of skyrmions
How to be more Pythagoras
Max Hughes investigates how channelling your inner Pythagorean may help you to become the next big lifestyle influencer
In conversation with Cédric Villani
We feel underdressed for Breakfast at Villani's
A mathematical view of voting systems
Why voting systems can never be fair
