Maths beyond the textbook.
Unexpected ideas, visual explanations and the stories hiding inside everyday maths.
Why no one has ever shuffled a deck of cards the same way twice
Are you breathing Julius Caesar's last breath?
The Monty Hall problem: why you should always switch
Could every human on Earth fit inside Loch Ness?
Longer reads
Deeper dives, for when you have a coffee and twenty minutes to spare.
Astronomically large numbers
Counting things that turn out to be far bigger than they look.
Chance, odds and paradoxes
Where intuition reliably gets probability wrong.
How numbers mislead you
Statistics that are true, and conclusions that are not.
Measuring the Earth
What you can work out about the planet with a stick and some trigonometry.
Out in space
Deriving the numbers behind the Sun, the Moon and the universe itself.
Back-of-the-envelope
Silly questions, taken entirely seriously.
Beautiful results
Pure maths that is worth knowing for its own sake.
Puzzles that built maths
Idle questions that accidentally founded entire fields.
Hiding in plain sight
The maths built into clocks, calendars, paper and insects.
