"On Tuesday, May 15, tens of thousands of people across the world pointed cameras - and cellphones - at everyday life, with all its joys and sorrows. Professional and amateur photographers got involved: students, doctors, cleaners, journalists, astronauts, politicians and truck drivers. Everybody committed to this simple idea - using a camera to send a message, to our own time and to the future."

This is the foreword, written by UN deputy secretary-general Jan Eliasson - to the book A Day in the World, which is a compilation of 1 000 photographs from 100 countries including South Africa.