## Articles

**Phil Wilson**, why should this be? Is mathematics a universal truth, and how would we tell?

*Plus*, we heard how a simple mathematical equation became the subject of a debate in the UK parliament.

**Chris Budd**and

**Chris Sangwin**continue the story of the mighty quadratic equation.

**Lewis Dartnell**solves these, and other, puzzles of animal patterning.

**John Haigh**thinks that perhaps the publicity surrounding the lottery has enhanced the nation's numeracy.

**Chris Budd**and

**Chris Sangwin**tell us, in 2003 the good old quadratic equation, which we all learned about in school, reached these dizzy pinnacles of fame.