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For 1,000 years the indigenous Nenets people have herded their reindeer along the Yamal peninsula. But their survival in this remote region of north-west Siberia is under serious threat from climate change as Russia's ancient permafrost melts

Allan Savory works to promote holistic management in the grasslands of the world to stop desertification

Updated June 2012 To examine the processes and factors involved in desertification

interactive book