2. Sudan Rising temperatures are causing the Sahara Desert to expand, eating into the farmland on the edge of the wastelands and causing immense pressure for food.
Rainfall in the northern regions of Sudan, including war-torn Darfur, is down by 30 per cent over the past 40 years, with the Sahara advancing by well over a mile every year.
Scientists believe that Darfur is an example of climate change conflict, with tribal disputes being exacerbated by increased demand for scarce fertile land and water reserves.
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