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

A tale of $n$ cities
Donovan Young finds every connection wherever he goes.
Prize crossnumber, Issue 21
Can you solve it?
Oπnions: In defence of toy models
Calum gets on his soap box about toy models
Love Triangle
We review the fifth of this year’s nominees for Book of the Year
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
