More than a million refugees travelled from the Middle East to Europe in 2015. Photojournalist Giles Duley recorded some of their stories, collected in his new book, I Can Only Tell You What My Eyes See

Observer event: Stories from the frontline

Thursday 29 June, 7pm, at the Guardian offices, London N1

Giles Duley joins the Observer’s Emma Graham-Harrison, the UNHCR’s Sybella Wilkes and Hassan Akkad, a teacher imprisoned by the Assad regime, to discuss the refugee crisis. For details or to book tickets go to membership.theguardian.com

• Giley Duley: ‘I stood on those Lesbos beaches in floods of tears’