More from Chalkdust
- Michael Wendl really wants those spammers to stop calling him
- Donovan Young looks at the shapes made when two cones collide
- Have your say
- We announce the winner of this coveted prize
- Can you solve four puzzles to reveal the hidden message?
- Cardioids in coffee cups, counting with three fingers, and breakfast at Villani's. Plus the return of all your favourite fun pages in our autumn 2017 issue.