Sophie Bleau chops up, unravels, and squeezes the torus into shape
How Kelvin estimated the age of the Earth by thinking about a baked potato
In 2018, scientists discovered a new shape that is essential to multicellular life
As the festive season strikes again, we'll be dishing out more fiendish puzzles – this time with prizes!
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.
Can you solve our 3D Sudoku puzzles?
