## Articles

**Artur Ekert**visits the strange subatomic world and investigates the possibility of unbreakable quantum cryptography.

**Jeffrey Rosenthal**follows Galileo's observation that the entire universe is written in the language of mathematics - and that includes music.

**Lewis Dartnell**, it could be that the mathematical phenomenon of chaos is a crucial part of what makes our brains work.

**Michael McIntyre**explores the underlying wave mathematics.

- Wisdom from above - An intriguing debate in the House of Lords on standards in maths education
- Readers' corner - How many computers does the world need?