Want facts and want them fast? Our Maths in a minute series explores key mathematical concepts in just a few words. From symmetry to Euclid's axioms, and from binary numbers to the prosecutor's fallacy, learn some maths without too much effort.

The mathematical problem with turbulence.

How crinkly is crinkly?

Count around the clock.

Capturing symmetry with algebra.

Why the humble average can be grossly misleading.

How to write a sum that's infinitely long.