Sam Harris looks at how Pingu and his friends can stay cosy
Sus Mafia strategies, LMS president Ulrike Tillmann, and Bae's theorem ❤️ all feature in our spring 2021 edition. Plus all your favourite puzzles & columns.
In 2018, scientists discovered a new shape that is essential to multicellular life
Lies, liquor and logical deduction play their part in this festive holiday tale
Win this year's best book of geometry puzzles
We round up some of the last month's top mathematical posts from around the internet
