## Maths in a minute

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.

What is herd immunity and what does it have to do with a number called

*R*_{0}?How should people arrange themselves for maximal socialising at a safe distance?

Explore a mystery that intrigued Stephen Hawking until the end of his life.

Would you like to get away from Earth? Here's how fast you would need to go.