More from Chalkdust
Notched edge cards
Joe Celko makes a database from card and knitting needles
Beyond Measure
We review the sixth of this year’s nominees for the Book of the Year
Artificial music
Carmen Cabrera Arnau explores the use of AI in composition
Review: Power in numbers — the rebel women of mathematics
Celebrate International Women's day by reading about rebel women in mathematics!
Top Ten: Colours of chalk
The definitive chart of chalk's greatest colours
Why is it so hard to pull two phone books apart?
Take two phone books and interleave all their pages one by one. Now try and pull them apart by their spines. Impossible, right?