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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.

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
Top ten vote issue 16
Have your say
Integration: It’s more than the sum of its parts
Defining what exactly an integral is leads naturally to an explanation of how to handle approximating them.
In conversation with Olubunmi Abidemi Fadipe-Joseph
Meet Olubunmi Abidemi Fadipe-Joseph, an active promoter for women in mathematics from Nigeria