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Dear Dirichlet, Issue 19
Game shows, flight and social media bots are among the problems solved in this issue's Dear Dirichlet agony aunt column
Penguins: the emperors of fluid dynamics
Sam Harris looks at how Pingu and his friends can stay cosy
A Ring of Cats and Dogs
We review the first of this year’s nominees for the Book of the Year
Chalkdust issue 11 puzzle hunt #1
Matthew Scroggs sets the first puzzle. Can you solve it?
Game, set, maths (no more tennis puns)
No more Katie Steckles.
Between a square rock and a hard pentagon: fractional polygons
A polygon with four and a half sides?!