Penguins, prison and PDE patterns coming your way in our new issue! Plus all your favourite puzzles & columns.
Sam Harris looks at how Pingu and his friends can stay cosy
How does one produce a net for the broadest class of polyhedra?
Never be stumped by a maths problem again, with this crash course from the ever-competent Stephen Muirhead
The discovery of gravitational waves offers a new way of looking at the universe. Who knows what we will discover?
Here is the reason why the golden era of Twitter is gone
