More from Chalkdust
A Ring of Cats and Dogs
We review the first of this year’s nominees for the Book of the Year
My secret
Julia Schanen hates being mistaken for a genius.
The history of pi
What is pi? How do we define it and who first thought of it? We explore the history of this quintessential mathematical constant.
Fractograms
Hugh Duncan explores the hidden patterns of fractions
Ace
How tennis players spin and slice their serves
Politics: a tweeting glance
What does Twitter have to do with politics?