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Crossnumber winners, Issues 20–22
Did you solve it?
Much Ado About Numbers
We review the fourth of this year’s nominees for Book of the Year
The scutoid: a geometric building block of life
In 2018, scientists discovered a new shape that is essential to multicellular life
How many quadratics factorise?
Write down a quadratic. What is the probability that it factorises? Paging Prof. Dirichet...
Top Ten: Colours of chalk
The definitive chart of chalk's greatest colours
How to make: Platonic solids from tube maps
Impress your friends! As presented in our Talkdust show.
