We look at why people are risking their lives to travel to Europe by sea and by land - what are the 'push and pull factors? What faces people on their journey, and what are the huge risks they take? And what is Europe doing about the migrant crisis?Host Sinéad O'Carroll is joined by former Economics lecturer from TU Dublin, Sean Byrne, reporter Órla Ryan and Médecins Sans Frontières nurse Aoife Ní Mhurchú to discuss the issue.