img1 - Chalkdust

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 11
Vote for your favourite maths-themed day out
The digital sum of the products of twin primes is 8?
What connects the products of twin primes with something you learnt in primary school and the number 8?
In conversation with Ian Stewart
We speak to one of Britain's most successful popularisers of maths