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The drivers of tropical deforestation have shifted in the early 21st century to hinge on growth of cities and the globalized agricultural trade, a new large-scale study concludes. The observations sta...
Climate Change Could Drive Vast Human Migrations--Displacements Already Underway, Says Report（图）
Climate Change Vast Human Migrations
2009/12/10
By mid-century, people may be fleeing rising seas, droughts, floods and other effects of changing climate, in migrations that could vastly exceed the scope of anything before, says a major new report....