Exercise for the reader: train your AI to identify this cat
More from Chalkdust
On the cover: skyrmions
Sven Bjarke Gudnason and Calum Ross introduce you to the wonderful world of skyrmions
Things with silly names
Katie Steckles doesn't understand why any mathematical phenomenon would ever have a not-silly name
Chalkdust issue 11 puzzle hunt #3
David Sheard sets the third puzzle. Can you solve it?
Baking a Menger sponge sponge
Sam Hartburn bakes your favourite fractal
Pretend numbers
20 questions, the axiom of choice and colouring sequences.
Why I hate an empty bus stop
How the queue size tells you when the next bus is coming