Images of families displaced by floods, prolonged droughts or extreme storms have become a distressingly regular feature of the daily news. As the impact of climate change intensifies, so does concern over its effects on human mobility. Ongoing changes to the world's climate now raise a salient, apparently simple question: To what extent does climate change cause migration?

Images of families displaced by floods, prolonged droughts or extreme storms have become a distressingly regular feature of the daily news. As the impact of climate change intensifies, so does concern over its effects on human mobility. Ongoing changes to the world’s climate now raise a salient, apparently simple question: To what extent does climate change cause migration?

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