http://www.slate.com/articles/news_and_politics/foreigners/2015/09/refugee_crisis_or_climate_crisis_is_europe_experiencing_the_long_predicted.html

Experts have been issuing dire predictions for years that the effects of climate change will eventually lead to an unprecedented number of displaced people. And while the ongoing refugee crisis in Europe has been sparked primarily by violence in the Middle East and North Africa, it has prompted some to ask whether the era of climate refugees has already begun.