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r, and other countries (cf.: http://en.wikipedia.org/wiki/List_of_ongoing_conflicts), there are 1.2 billion hectares of formerly arable land with moderate to severe soil degradation (http://www.globalchange.umich.edu/globalchange2/current/lectures/land_deg/land_deg.html) and riots have been tied to the food price index (which is now above the critical threshold of 210, http://necsi.edu/research/so
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