The Slip Slop Slap campaign and the Brexit referendum

Max Pearson presents a collection of the week’s Witness History interviews from the BBC World Service. Our guest is Devi Sridhar, Professor of Global Public Health at the University of Edinburgh in the UK.We start with the birth of an Australian campaign to get people to take care in the sun and Ireland's response to the UK Brexit vote.Next, the 110th anniversary of the Battle of the Somme and the Hong Kong bookseller detained for selling material critical of China's leaders.Finally, Brazilian footballer Ronaldo's knee injury in 2000 and the story behind a famous insulting song in Mexico - Rata de dos Patas.Contributors: Professor David Hill - former head of Cancer Council Victoria. Professor Devi Sridhar - Professor of Global Public Health at the University of Edinburgh. Rory Montgomery - former diplomat, who led Ireland's Brexit negotiating team. Lam Wing-kee - Hong Kong bookseller who was detained for selling material critical of China’s leaders. Nilton Petroni - Ronaldo Nazario's former physiotherapist. Manuel Eduardo Toscano - composer of Rata de dos Patas.(Photo: Sid the Seagull, mascot for the Slip Slop Slap campaign. Credit: Cancer Care Victoria)