Migration has become one of the key issues – if not the most important issue – of our time. Millions of people migrate towards Europe and all over the world every year, driven by a number of factors. Refugees flee economic crises, conflicts, famine and political persecution. There are also environmental refugees, people forced to leave their home because they're threatened by the adverse effects of climate change. If you want to better understand what’s behind the refugee crisis, get all the information you need on LifeGate.