Alex Bellos is an author and broadcaster whose specialises in mathematics and Brazil. When he was the Guardian's correspondent in South America he wrote Futebol: The Brazilian Way of Life, a look at contemporary Brazil seen through soccer. It was a huge critical success, and led to his being asked to ghostwrite Pelé: The Autobiography. He is also the author of the popular math books Here's Looking at Euclid and The Grapes of Math, which were both international bestsellers. The former has had more than 20 translations and won awards.