This article tries to make a link between current mass migrations of people and climate, giving Syria as one example.

There is not a migrant or refugee crisis. We’re in the midst of a global migration shift. While its unrelenting realities of forced displacement, whether from war, persecution or economic despair originate from disparate causes, they all share a singular fact: The nascent stages of this historical migration shift require long-term planning, not short-term designation.

Nearly 60 million people fled their homes in 2014, according to a recent UN report. Within a generation, according to estimates by numerous climate scientists and the international organizations dealing with migration, 150-200 million people could be displaced by the fallout of severe drought, flooding and extreme climate.

As the Proceedings of the National Academy of Sciences noted in a recent study, “the severity and duration of the recent Syrian drought,” which has triggered some of the largest displacements of refugees across the Mediterranean, are a significant part of the roots of the Syrian civil war itself.