More from Chalkdust
On the cover: skyrmions
Sven Bjarke Gudnason and Calum Ross introduce you to the wonderful world of skyrmions
Danny Chung Does Not Do Maths
We review the first of this year's nominees for the Book of the Year
Heads and Tails
An unexpected way to beat the odds in this classic game
Why maps are wrong
If only the Earth were flat...
Puzzles about calculus
Can you solve these puzzles about differentiation and integration?
Page 3 model: Traffic flow
Ever been stuck in motorway traffic which seems to have no reason? A model for traffic flow explains why.