## geometry

**Joan Lasenby**tells us about the mathematics and engineering behind them.

**Runner up in the schools category**. Dusty books, chalky blackboards and checked shirts are all things usually associated with maths. But according to

**Jonathan Tims**, pubs, hot chocolate and cats can be far more inspirational. Join him on a trip through shadow land.

A public discussion explores deep questions

Van Gogh paintings mimic the physics that governs turbulence

**Mario Livio**explains how not only shapes, but also laws of nature can be symmetrical, and how this aids our understanding of the universe.

**David Acheson**? The truth, he says, is that most of them have never been anywhere near it, and that mathematicians could do more to change this perception - perhaps by emphasising the element of surprise that so often accompanies mathematics at its best.

- Plus looks different! - Redesigning the website
- Beauty is truth, truth beauty - The aesthetics of mathematics
- Readers' corner - Rolling with money revisited: The Pyramid Puzzle

**J.V. Field**continues our series on the origins of proof with an examination of Kepler's astronomy.