## algorithm

Find out how a little bit of maths can enable a machine to learn from experience.

The simple act of packing your luggage can open a complex can of worms.

**cricket**is particularly rich in statistics and rankings. It has probably not escaped your attention that the World Cup of cricket has just finished in South Africa (Australia won - again) and so to mark the occasion, Rob Eastaway tells

*Plus*what it takes to be the best.

A test invented by the mathematician Alan Turing in 1950 is helping to stop spammers.

**Tom Körner**speculates on the historical reasons why computers were invented when they were.

**Robert Leese**explains how the mathematics of colouring graphs can help avoid interference on your mobile phone.